摘要
[目的]开展早稻秸秆粉碎还田腐熟技术研究,进一步推广农作物秸秆还田腐熟技术,提高秸秆资源利用率和耕地综合生产能力.[方法]在宁远县5个不同监测点进行早稻秸秆粉碎还田试验,研究秸秆还田腐熟技术对土壤养分、晚稻产量、氮肥减施量和土壤增加钾量的影响.[结果]与秸秆不还田比较,秸秆还田腐熟技术使5个监测点有机质、全氮、全磷、全钾、有效磷、速效钾、缓效钾含量平均值分别增加了1.1 g/kg、0.1 g/kg、0.1 g/kg、0.9 g/kg、0.5 mg/kg、8 mg/kg、8 mg/kg;晚稻平均产量达7 392 kg/hm2,增产393 kg/hm2,增产率5.61％;氮肥减施量为3.60 kg/hm2;土壤增加钾量为51.00 kg/hnm2.[结论]水稻秸秆还田腐熟技术可以增加土壤养分含量,减少化肥施用量,增加晚稻水稻产量.
Abstract
[Objective] Rice straw crushing and returning to field technology was studied,so as to further extend the composting technology and improve straw resource utilization rate and comprehensive production ability of cultivated land.[Method] Rice straw crushing and returning to field test was conducted in 5 monitoring sites in Ningyuan County.[Result] By using straw composting technology,the mean content of organic matter,total N,total P,total K,available P,availabel K,slowly available K in 5 monitoring sites increased 1.1 g/kg,0.1 g/kg,0.1 g/kg,0.9 g/kg,0.5 mg/kg,8 mg/kg,8 mg/kg;the average yield of late rice was 7 392 kg/hm2,increased 393 kg/hm2,the increasing ratio was 5.61％;the reduction amount of N fertilizer was 3.60 kg/hm2;K fertilizer increased 51.00 kg/hm2.[Conclusion] Rice straw composting technology can increase soil nutrient content,reduce the application amount of fertilizer and increase late rice yield.
基金项目
湖南省2014年度耕地保护与质量提升-秸秆还田腐熟技术补助项目()
国家科技期刊平台
NSTL
维普
万方数据