摘要
通过田间随机区组设计试验,研究了不同玉米秸秆还田量对接茬麦田土壤碳、氮肥力及冬小麦产量的影响。结果表明,秸秆还田可以增加土壤有机质和缓解土壤氮流失,提高土壤微生物碳、氮的固持和供给效果,增加土壤微生物量C/N,提高土壤供肥水平。从不同玉米秸秆还田量的效应对比与回归分析,进一步明确在黄土高原有灌溉条件的地区,施N 138 kg/hm2,玉米秸秆还田量9000 kg/hm2,能有效提高土壤肥力,可使接茬冬小麦显著增产7.47%。
Effects of different returnning amount of maize straw on soil fertility and yield of winter wheat was studied using randomized block design.The results showed that straw returning can increase soil organic matter content and reduce soil total nitrogen loss,enhance the capacity of soil microbial fixing and supplying C and N,increase C/N,and change the distributionof soil microbial community.Higher soil microbial C/N and redistribution of original soil microbial community was propitious to the soil organic transformation and mineralize carbon decomposition,as consequence,improve the soil nutrient supply.Our results indicate that under condition of study area,applying N 138 kg/ha,combined with returnning amount of maize straw 9000 kg/ha can enhance soil fertility and increase yield by 7.47%,significantly.
出处
《植物营养与肥料学报》
CAS
CSCD
北大核心
2010年第3期612-619,共8页
Journal of Plant Nutrition and Fertilizers
基金
国家自然科学基金(30300213)
教育部新世纪优秀人才支持计划基金(NCET-07-0700)
"十一五"国家科技支撑计划(2006BAD15B06
2007BAD89B16)项目资助
关键词
秸秆还田
土壤肥力
小麦产量
straw returning
soil fertility
wheat yield
作者简介
张静（1983-），女，河南新乡人，硕士研究生，主要从事农业生态研究。E-mail：xgbgzj@sina．com
通讯作者E—mail：wenxiaoxia6811@163．com
