不同还田方式对玉米秸秆腐解及土壤养分含量的影响
|
摘要
通过土壤耕作和秸秆还田试验,以玉米秸秆为研究对象,探讨东北棕壤土区适宜的秸秆还田方式,为秸秆资源的高效利用提供理论依据。在辽宁沈阳设置连续两年(2014—2015年)的田间定位试验,采用尼龙网袋法研究免耕覆盖(NTS)、旋耕还田(RTS)和翻耕还田(PTS)3种秸秆还田方式下秸秆腐解率和碳氮磷钾养分释放率,分析秸秆还田方式对耕层土壤养分含量的影响。结果表明, RTS和PTS秸秆腐解速率均表现为前期快、后期慢,秸秆养分释放率均表现为钾>磷>碳>氮。NTS、RTS和PTS处理秸秆两年平均腐解率分别为38.8%、78.0%、65.9%,两年平均碳释放率分别为56.5%、78.8%、69.4%,氮释放率为16.7%、53.5%、38.8%,磷释放率为81.3%、92.5%、89.8%,钾释放率为92.0%、99.4%、98.9%。NTS处理秸秆腐解率及碳氮释放率与还田时间符合逻辑斯蒂曲线方程,RTS和PTS处理秸秆腐解率、碳氮释放率及3种还田方式秸秆磷钾释放率随还田时间变化符合米氏方程。秸秆还田有助于提高耕层土壤有机碳和全氮含量, RTS处理土壤全磷含量显著高于PTS处理(P<0.05),与NTS处理全磷含量差异不显著,3种还田方式土壤全钾含量差异不显著。综合分析秸秆腐解和耕层土壤培肥效果,东北棕壤土区建议玉米秸秆还田方式为旋耕秸秆还田。
By investigating the impacts of tillage and straw return methods on maize straw decomposition, a suitable approach of returning maize straw to soil was explored for straw utilization with high soil efficiency in the brown soil area of northeastern China. A two-year(2014-2015) field experiment including no-tillage with straw mulch(NTS), straw incorporation through rotary tillage(RTS) and straw incorporation through plow tillage(PTS) treatments was conducted in Shenyang, Liaoning Province. Nylon bags containing straw 2-5 cm long were buried in different depths of soil according to tillage depth of different treatments(0 cm for NTS, 15 cm for RTS and 25 cm for PTS) in the study, and the decomposition of straws and release rates of carbon(C), nitrogen(N), phosphorus(P) and potassium(K) by maize straw, along with the effects of straw return on nutrients contents of the topsoil were tested. The results showed that straw decomposition rates were high at the early phase and slowed down at the later phase under both RTS and PTS treatments, with the order of nutrients release rates in all treatments of K > P > C > N. The mean decomposition rates of straw in both years were 38.8%, 78.0% and 65.9% respectively for NTS, RTS and PTS treatments. Nutrients release rates of returned straws under NTS, RTS and PTS treatments were respectively 56.5%, 78.8% and 69.4% for C, 16.7%, 53.5% and 38.8% for N, 81.3%, 92.5% and 89.8% for P, and 92.0%, 99.4% and 98.9% for K. The tendency for straw decomposition and C and N release under NTS treatment fitted well with Logistic function, but those of RTS and PTS treatments fitted Michaelis-Menten function. Moreover, K and P nutrients release of all the three treatments changed according to the Michaelis-Menten functions. Straw return enhanced organic carbon and total nitrogen contents of the topsoil. Then total soil P content of RTS treatment was significantly higher than that of PTS(P < 0.05). However, there was no significant difference in total soil P content between RTS and NTS treatments, and in total soil K content for all the treatments. Based on comprehensive analysis from straw decomposition characteristics and fertility, straw incorporation through rotary tillage was the suitable approach for maize straw return in brown soil areas in Northeast China.
By investigating the impacts of tillage and straw return methods on maize straw decomposition, a suitable approach of returning maize straw to soil was explored for straw utilization with high soil efficiency in the brown soil area of northeastern China. A two-year(2014-2015) field experiment including no-tillage with straw mulch(NTS), straw incorporation through rotary tillage(RTS) and straw incorporation through plow tillage(PTS) treatments was conducted in Shenyang, Liaoning Province. Nylon bags containing straw 2-5 cm long were buried in different depths of soil according to tillage depth of different treatments(0 cm for NTS, 15 cm for RTS and 25 cm for PTS) in the study, and the decomposition of straws and release rates of carbon(C), nitrogen(N), phosphorus(P) and potassium(K) by maize straw, along with the effects of straw return on nutrients contents of the topsoil were tested. The results showed that straw decomposition rates were high at the early phase and slowed down at the later phase under both RTS and PTS treatments, with the order of nutrients release rates in all treatments of K > P > C > N. The mean decomposition rates of straw in both years were 38.8%, 78.0% and 65.9% respectively for NTS, RTS and PTS treatments. Nutrients release rates of returned straws under NTS, RTS and PTS treatments were respectively 56.5%, 78.8% and 69.4% for C, 16.7%, 53.5% and 38.8% for N, 81.3%, 92.5% and 89.8% for P, and 92.0%, 99.4% and 98.9% for K. The tendency for straw decomposition and C and N release under NTS treatment fitted well with Logistic function, but those of RTS and PTS treatments fitted Michaelis-Menten function. Moreover, K and P nutrients release of all the three treatments changed according to the Michaelis-Menten functions. Straw return enhanced organic carbon and total nitrogen contents of the topsoil. Then total soil P content of RTS treatment was significantly higher than that of PTS(P < 0.05). However, there was no significant difference in total soil P content between RTS and NTS treatments, and in total soil K content for all the treatments. Based on comprehensive analysis from straw decomposition characteristics and fertility, straw incorporation through rotary tillage was the suitable approach for maize straw return in brown soil areas in Northeast China.
引文
[1]毕于运,王亚静,高春雨.中国主要秸秆资源数量及其区域分布[J].农机化研究,2010,32(3):1-7BI Y Y,WANG Y J,GAO C Y.Straw resource quantity and its regional distribution in China[J].Journal of Agricultural Mechanization Research,2010,32(3):1-7
[2]刘晓永,李书田.中国秸秆养分资源及还田的时空分布特征[J].农业工程学报,2017,33(21):1-19LIU X Y,LI S T.Temporal and spatial distribution characteristics of crop straw nutrient resources and returning to farmland in China[J].Transactions of the CSAE,2017,33(21):1-19
[3]左旭,王红彦,王亚静,等.中国玉米秸秆资源量估算及其自然适宜性评价[J].中国农业资源与区划,2015,36(6):5-10ZUO X,WANG H Y,WANG Y J,et al.Estimation and suitability evaluation of corn straw resources in China[J].Chinese Journal of Agricultural Resources and Regional Planning,2015,36(6):5-10
[4]李逢雨,孙锡发,冯文强,等.麦秆、油菜秆还田腐解速率及养分释放规律研究[J].植物营养与肥料学报,2009,15(2):374-380LI F Y,SUN X F,FENG W Q,et al.Nutrient release patterns and decomposing rates of wheat and rapeseed straw[J].Plant Nutrition and Fertilizer Science,2009,15(2):374-380
[5]武际,郭熙盛,王允青,等.不同水稻栽培模式和秸秆还田方式下的油菜、小麦秸秆腐解特征[J].中国农业科学,2011,44(16):3351-3360WU J,GUO X S,WANG Y Q,et al.Decomposition characteristics of rapeseed and wheat straws under different rice cultivations and straw mulching models[J].Scientia Agricultura Sinica,2011,44(16):3351-3360
[6]徐健程,王晓维,朱晓芳,等.不同绿肥种植模式下玉米秸秆腐解特征研究[J].植物营养与肥料学报,2016,22(1):48-58XU J C,WANG X W,ZHU X F,et al.Study on decomposition of maize straw under different green manure cropping patterns[J].Plant Nutrition and Fertilizer Science,2016,22(1):48-58
[7]曹莹菲,张红,刘克,等.不同处理方式的作物秸秆田间腐解特性研究[J].农业机械学报,2016,47(9):212-219CAO Y F,ZHANG H,LIU K,et al.Decomposition characteristics of crop residues among different agricultural treatments[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(9):212-219
[8]江晓东,迟淑筠,王芸,等.少免耕对小麦/玉米农田玉米还田秸秆腐解的影响[J].农业工程学报,2009,25(10):247-251JIANG X D,CHI S Y,WANG Y,et al.Effect of less tillage and no-tillage patterns on decomposition of returned maize straw in wheat/maize system[J].Transactions of the CSAE,2009,25(10):247-251
[9]张宇,陈阜,张海林,等.耕作方式对玉米秸秆腐解影响的研究[J].玉米科学,2009,17(6):68-73ZHANG Y,CHEN F,ZHANG H L,et al.Tillage effects of decomposed ratio on corn straw[J].Journal of Maize Sciences,2009,17(6):68-73
[10]张红,吕家珑,曹莹菲,等.不同植物秸秆腐解特性与土壤微生物功能多样性研究[J].土壤学报,2014,51(4):743-752ZHANG H,LYU J L,CAO Y F,et al.Decomposition characteristics of different plant straws and soil microbial functional diversity[J].Acta Pedologica Sinica,2014,51(4):743-752
[11]岳丹,蔡立群,齐鹏,等.小麦和玉米秸秆不同还田量下腐解特征及其养分释放规律[J].干旱区资源与环境,2016,30(3):80-85YUE D,CAI L Q,QI P,et al.The decomposition characteristics and nutrient release laws of wheat and corn straws under different straw-returned amount[J].Journal of Arid Land Resources and Environment,2016,30(3):80-85
[12]戴志刚,鲁剑巍,李小坤,等.不同作物还田秸秆的养分释放特征试验[J].农业工程学报,2010,26(6):272-276DAI Z G,LU J W,LI X K,et al.Nutrient release characteristic of different crop straws manure[J].Transactions of the CSAE,2010,26(6):272-276
[13]王允青,郭熙盛.不同还田方式作物秸秆腐解特征研究[J].中国生态农业学报,2008,16(3):607-610WANG Y Q,GUO X S.Decomposition characteristics of crop-stalk under different incorporation methods[J].Chinese Journal of Eco-Agriculture,2008,16(3):607-610
[14]庞党伟,陈金,唐玉海,等.玉米秸秆还田方式和氮肥处理对土壤理化性质及冬小麦产量的影响[J].作物学报,2016,42(11):1689-1699PANG D W,CHEN J,TANG Y H,et al.Effect of returning methods of maize straw and nitrogen treatments on soil physicochemical property and yield of winter wheat[J].Acta Agronomica Sinica,2016,42(11):1689-1699
[15]YOU D B,TIAN P,SUI P X,et al.Short-term effects of tillage and residue on spring maize yield through regulating root-shoot ratio in Northeast China[J].Scientific Reports,2017,7:13314
[16]胡宏祥,程燕,马友华,等.油菜秸秆还田腐解变化特征及其培肥土壤的作用[J].中国生态农业学报,2012,20(3):297-302HU H X,CHENG Y,MA Y H,et al.Decomposition characteristics of returned rapeseed straw in soil and effects on soil fertility[J].Chinese Journal of Eco-Agriculture,2012,20(3):297-302
[17]矫丽娜,李志洪,殷程程,等.高量秸秆不同深度还田对黑土有机质组成和酶活性的影响[J].土壤学报,2015,52(3):665-672JIAO L N,LI Z H,YIN C C,et al.Effect of incorporation of crop straw on composition of soil organic matter and enzyme activity in black soil relative to depth and rate of the incorporation[J].Acta Pedologica Sinica,2015,52(3):665-672
[18]成臣,汪建军,程慧煌,等.秸秆还田与耕作方式对双季稻产量及土壤肥力质量的影响[J].土壤学报,2018,55(1):247-257CHENG C,WANG J J,CHENG H H,et al.Effects of straw returning and tillage system on crop yield and soil fertility quality in paddy field under double-cropping-rice system[J].Acta Pedologica Sinica,2018,55(1):247-257
[19]鲍士旦.土壤农化分析[M].第3版.北京:中国农业出版社,2000:30-34BAO S D.Soil and Agricultural Chemistry Analysis[M].3rd ed.Beijing:China Agriculture Press,2000:30-34
[20]王旭东,陈鲜妮,王彩霞,等.农田不同肥力条件下玉米秸秆腐解效果[J].农业工程学报,2009,25(10):252-257WANG X D,CHEN X N,WANG C X,et al.Decomposition of corn stalk in cropland with different fertility[J].Transactions of the CSAE,2009,25(10):252-257
[21]代文才,高明,兰木羚,等.不同作物秸秆在旱地和水田中的腐解特性及养分释放规律[J].中国生态农业学报,2017,25(2):188-199DAI W C,GAO M,LAN M L,et al.Nutrient release patterns and decomposition characteristics of different crop straws in drylands and paddy fields[J].Chinese Journal of Eco-Agriculture,2017,25(2):188-199
[22]匡恩俊,迟凤琴,宿庆瑞,等.三江平原地区不同有机物料腐解规律的研究[J].中国生态农业学报,2010,18(4):736-741KUANG E J,CHI F Q,SU Q R,et al.Decomposition regularity of organic materials in Sanjiang Plain region[J].Chinese Journal of Eco-Agriculture,2010,18(4):736-741
[23]刘世平,陈文林,聂新涛,等.麦稻两熟地区不同埋深对还田秸秆腐解进程的影响[J].植物营养与肥料学报,2007,13(6):1049-1053LIU S P,CHEN W L,NIE X T,et al.Effect of embedding depth on decomposition course of crop residues in rice-wheat system[J].Plant Nutrition and Fertilizer Science,2007,13(6):1049-1053
[24]王景,陈曦,魏俊岭.水稻秸秆和玉米秸秆在好气和厌氧条件下的腐解规律[J].农业资源与环境学报,2017,34(1):59-65WANG J,CHEN X,WEI J L.Decomposition of rice straw and corn straw under aerobic and anaerobic conditions[J].Journal of Agricultural Resources and Environment,2017,34(1):59-65
[25]李昌明,王晓玥,孙波.不同气候和土壤条件下秸秆腐解过程中养分的释放特征及其影响因素[J].土壤学报,2017,54(5):1206-1217LI C M,WANG X Y,SUN B.Characteristics of nutrient release and its affecting factors during plant residue decomposition under different climate and soil conditions[J].Acta Pedologica Sinica,2017,54(5):1206-1217
[26]傅伟,刘坤平,陈洪松,等.秸秆还田替代化学钾肥对喀斯特峰丛洼地春玉米产量及土壤钾素的影响[J].中国生态农业学报,2017,25(12):1823-1831FU W,LIU K P,CHEN H S,et al.Spring maize yield and soil potassium balance under replacement of potassium with straw in karst peak-cluster depression[J].Chinese Journal of Eco-Agriculture,2017,25(12):1823-1831
[27]陈尚洪,朱钟麟,吴婕,等.紫色土丘陵区秸秆还田的腐解特征及对土壤肥力的影响[J].水土保持学报,2006,20(6):141-144CHEN S H,ZHU Z L,WU J,et al.Decomposition characteristics of straw return to soil and its effect on soil fertility in purple hilly region[J].Journal of Soil and Water Conservation,2006,20(6):141-144
[28]隋鹏祥,张心昱,温学发,等.耕作方式和秸秆还田对棕壤土壤养分和酶活性的影响[J].生态学杂志,2016,35(8):2038-2045SUI P X,ZHANG X Y,WEN X F,et al.Effects of tillage and straw management on nutrient contents and enzyme activities of brown soil[J].Chinese Journal of Ecology,2016,35(8):2038-2045
[2]刘晓永,李书田.中国秸秆养分资源及还田的时空分布特征[J].农业工程学报,2017,33(21):1-19LIU X Y,LI S T.Temporal and spatial distribution characteristics of crop straw nutrient resources and returning to farmland in China[J].Transactions of the CSAE,2017,33(21):1-19
[3]左旭,王红彦,王亚静,等.中国玉米秸秆资源量估算及其自然适宜性评价[J].中国农业资源与区划,2015,36(6):5-10ZUO X,WANG H Y,WANG Y J,et al.Estimation and suitability evaluation of corn straw resources in China[J].Chinese Journal of Agricultural Resources and Regional Planning,2015,36(6):5-10
[4]李逢雨,孙锡发,冯文强,等.麦秆、油菜秆还田腐解速率及养分释放规律研究[J].植物营养与肥料学报,2009,15(2):374-380LI F Y,SUN X F,FENG W Q,et al.Nutrient release patterns and decomposing rates of wheat and rapeseed straw[J].Plant Nutrition and Fertilizer Science,2009,15(2):374-380
[5]武际,郭熙盛,王允青,等.不同水稻栽培模式和秸秆还田方式下的油菜、小麦秸秆腐解特征[J].中国农业科学,2011,44(16):3351-3360WU J,GUO X S,WANG Y Q,et al.Decomposition characteristics of rapeseed and wheat straws under different rice cultivations and straw mulching models[J].Scientia Agricultura Sinica,2011,44(16):3351-3360
[6]徐健程,王晓维,朱晓芳,等.不同绿肥种植模式下玉米秸秆腐解特征研究[J].植物营养与肥料学报,2016,22(1):48-58XU J C,WANG X W,ZHU X F,et al.Study on decomposition of maize straw under different green manure cropping patterns[J].Plant Nutrition and Fertilizer Science,2016,22(1):48-58
[7]曹莹菲,张红,刘克,等.不同处理方式的作物秸秆田间腐解特性研究[J].农业机械学报,2016,47(9):212-219CAO Y F,ZHANG H,LIU K,et al.Decomposition characteristics of crop residues among different agricultural treatments[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(9):212-219
[8]江晓东,迟淑筠,王芸,等.少免耕对小麦/玉米农田玉米还田秸秆腐解的影响[J].农业工程学报,2009,25(10):247-251JIANG X D,CHI S Y,WANG Y,et al.Effect of less tillage and no-tillage patterns on decomposition of returned maize straw in wheat/maize system[J].Transactions of the CSAE,2009,25(10):247-251
[9]张宇,陈阜,张海林,等.耕作方式对玉米秸秆腐解影响的研究[J].玉米科学,2009,17(6):68-73ZHANG Y,CHEN F,ZHANG H L,et al.Tillage effects of decomposed ratio on corn straw[J].Journal of Maize Sciences,2009,17(6):68-73
[10]张红,吕家珑,曹莹菲,等.不同植物秸秆腐解特性与土壤微生物功能多样性研究[J].土壤学报,2014,51(4):743-752ZHANG H,LYU J L,CAO Y F,et al.Decomposition characteristics of different plant straws and soil microbial functional diversity[J].Acta Pedologica Sinica,2014,51(4):743-752
[11]岳丹,蔡立群,齐鹏,等.小麦和玉米秸秆不同还田量下腐解特征及其养分释放规律[J].干旱区资源与环境,2016,30(3):80-85YUE D,CAI L Q,QI P,et al.The decomposition characteristics and nutrient release laws of wheat and corn straws under different straw-returned amount[J].Journal of Arid Land Resources and Environment,2016,30(3):80-85
[12]戴志刚,鲁剑巍,李小坤,等.不同作物还田秸秆的养分释放特征试验[J].农业工程学报,2010,26(6):272-276DAI Z G,LU J W,LI X K,et al.Nutrient release characteristic of different crop straws manure[J].Transactions of the CSAE,2010,26(6):272-276
[13]王允青,郭熙盛.不同还田方式作物秸秆腐解特征研究[J].中国生态农业学报,2008,16(3):607-610WANG Y Q,GUO X S.Decomposition characteristics of crop-stalk under different incorporation methods[J].Chinese Journal of Eco-Agriculture,2008,16(3):607-610
[14]庞党伟,陈金,唐玉海,等.玉米秸秆还田方式和氮肥处理对土壤理化性质及冬小麦产量的影响[J].作物学报,2016,42(11):1689-1699PANG D W,CHEN J,TANG Y H,et al.Effect of returning methods of maize straw and nitrogen treatments on soil physicochemical property and yield of winter wheat[J].Acta Agronomica Sinica,2016,42(11):1689-1699
[15]YOU D B,TIAN P,SUI P X,et al.Short-term effects of tillage and residue on spring maize yield through regulating root-shoot ratio in Northeast China[J].Scientific Reports,2017,7:13314
[16]胡宏祥,程燕,马友华,等.油菜秸秆还田腐解变化特征及其培肥土壤的作用[J].中国生态农业学报,2012,20(3):297-302HU H X,CHENG Y,MA Y H,et al.Decomposition characteristics of returned rapeseed straw in soil and effects on soil fertility[J].Chinese Journal of Eco-Agriculture,2012,20(3):297-302
[17]矫丽娜,李志洪,殷程程,等.高量秸秆不同深度还田对黑土有机质组成和酶活性的影响[J].土壤学报,2015,52(3):665-672JIAO L N,LI Z H,YIN C C,et al.Effect of incorporation of crop straw on composition of soil organic matter and enzyme activity in black soil relative to depth and rate of the incorporation[J].Acta Pedologica Sinica,2015,52(3):665-672
[18]成臣,汪建军,程慧煌,等.秸秆还田与耕作方式对双季稻产量及土壤肥力质量的影响[J].土壤学报,2018,55(1):247-257CHENG C,WANG J J,CHENG H H,et al.Effects of straw returning and tillage system on crop yield and soil fertility quality in paddy field under double-cropping-rice system[J].Acta Pedologica Sinica,2018,55(1):247-257
[19]鲍士旦.土壤农化分析[M].第3版.北京:中国农业出版社,2000:30-34BAO S D.Soil and Agricultural Chemistry Analysis[M].3rd ed.Beijing:China Agriculture Press,2000:30-34
[20]王旭东,陈鲜妮,王彩霞,等.农田不同肥力条件下玉米秸秆腐解效果[J].农业工程学报,2009,25(10):252-257WANG X D,CHEN X N,WANG C X,et al.Decomposition of corn stalk in cropland with different fertility[J].Transactions of the CSAE,2009,25(10):252-257
[21]代文才,高明,兰木羚,等.不同作物秸秆在旱地和水田中的腐解特性及养分释放规律[J].中国生态农业学报,2017,25(2):188-199DAI W C,GAO M,LAN M L,et al.Nutrient release patterns and decomposition characteristics of different crop straws in drylands and paddy fields[J].Chinese Journal of Eco-Agriculture,2017,25(2):188-199
[22]匡恩俊,迟凤琴,宿庆瑞,等.三江平原地区不同有机物料腐解规律的研究[J].中国生态农业学报,2010,18(4):736-741KUANG E J,CHI F Q,SU Q R,et al.Decomposition regularity of organic materials in Sanjiang Plain region[J].Chinese Journal of Eco-Agriculture,2010,18(4):736-741
[23]刘世平,陈文林,聂新涛,等.麦稻两熟地区不同埋深对还田秸秆腐解进程的影响[J].植物营养与肥料学报,2007,13(6):1049-1053LIU S P,CHEN W L,NIE X T,et al.Effect of embedding depth on decomposition course of crop residues in rice-wheat system[J].Plant Nutrition and Fertilizer Science,2007,13(6):1049-1053
[24]王景,陈曦,魏俊岭.水稻秸秆和玉米秸秆在好气和厌氧条件下的腐解规律[J].农业资源与环境学报,2017,34(1):59-65WANG J,CHEN X,WEI J L.Decomposition of rice straw and corn straw under aerobic and anaerobic conditions[J].Journal of Agricultural Resources and Environment,2017,34(1):59-65
[25]李昌明,王晓玥,孙波.不同气候和土壤条件下秸秆腐解过程中养分的释放特征及其影响因素[J].土壤学报,2017,54(5):1206-1217LI C M,WANG X Y,SUN B.Characteristics of nutrient release and its affecting factors during plant residue decomposition under different climate and soil conditions[J].Acta Pedologica Sinica,2017,54(5):1206-1217
[26]傅伟,刘坤平,陈洪松,等.秸秆还田替代化学钾肥对喀斯特峰丛洼地春玉米产量及土壤钾素的影响[J].中国生态农业学报,2017,25(12):1823-1831FU W,LIU K P,CHEN H S,et al.Spring maize yield and soil potassium balance under replacement of potassium with straw in karst peak-cluster depression[J].Chinese Journal of Eco-Agriculture,2017,25(12):1823-1831
[27]陈尚洪,朱钟麟,吴婕,等.紫色土丘陵区秸秆还田的腐解特征及对土壤肥力的影响[J].水土保持学报,2006,20(6):141-144CHEN S H,ZHU Z L,WU J,et al.Decomposition characteristics of straw return to soil and its effect on soil fertility in purple hilly region[J].Journal of Soil and Water Conservation,2006,20(6):141-144
[28]隋鹏祥,张心昱,温学发,等.耕作方式和秸秆还田对棕壤土壤养分和酶活性的影响[J].生态学杂志,2016,35(8):2038-2045SUI P X,ZHANG X Y,WEN X F,et al.Effects of tillage and straw management on nutrient contents and enzyme activities of brown soil[J].Chinese Journal of Ecology,2016,35(8):2038-2045
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |