摘要
为了探讨长期施用化肥、有机无机结合等不同施肥条件下的冬小麦增产效果与土壤养分演变规律。以连续18年的长期定位施肥试验为依据,对历年冬小麦产量和土壤养分测试结果进行系统总结。结果表明:化肥与有机肥都可以提高冬小麦产量,且二者效果不相上下;化肥与有机肥都可以提高土壤有机质含量,有机肥与秸秆在提高土壤有机质,有效磷及有效钾含量方面比化肥更具优势;随着施肥年份的增加,土壤碱解氮呈缓慢增加趋势;施肥到一定阶段后,高量有机肥,常量有机肥,化肥及秸秆还田,无肥处理的土壤有效磷含量分别稳定在80,60,20,3 mg/kg左右。
Winter-wheat yields and soil nutrients were measured and collected based on a 18-year long-term located application of organic manure and fertilizers experiment in Zhengzhgou city of Henan Province.The results showed that：The effect of chemical fertilizers on winter wheat yield was as same as organic manure;Soil oganic matter content was increased by chemical fertilizers and organic manure;The effects of organic manure on soil oganic matter,olsen-P and available potassium were better than chemical fertilizers.Soil available phosphorus content remained constant after several years fertilization;Soil available phosphorus content of 1.5MNPK,MNPK,SNPK and NPK,CK was about 80,60,20,3 mg/kg,respectively.
出处
《华北农学报》
CSCD
北大核心
2010年第6期217-220,共4页
Acta Agriculturae Boreali-Sinica
基金
河南省重大公益性科研项目(081100911500)
国家"十一五"科技支撑计划项目(2006BAD25B06)
国家科技基础条件平台建设项目(SF2007-5)
关键词
长期施肥
冬小麦
产量
潮土
肥力
Long-term fertilization
Winter wheat
Yields
Fluvo-aquic soil
Fertility
