摘要
为了改善北京地区农田土壤结构,提高土壤蓄水保墒能力,提升农田生产能力,增加作物产量,自2009年开始在北京市延庆县保护性耕作试验田开展农田深松效果研究,对比分析了免耕和深松2种技术模式对土壤容重、含水率、水分入渗率及作物生长特性和产量的影响。试验结果表明,土壤容重平均由1.57 gcm3降低到1.51 gcm3,降低0.06 gcm3,降低了约4.0%;平均质量含水量增加5.9%,体现出较好的蓄水保墒能力,深松作业稳定入渗率提高了62.5%;较对照旋耕增产7.10%。
In order to improve structure of soil in farmland in Beijing area,improve soil water holding capacity,improve agricultural production capacity and increase crop yields,study on the effect of deep tillage farmland was developed in Yanqing county of Beijing city from 2009. Effects on soil bulk density,moisture content,water infiltration rate,crop growth characteristics and yield that using 2 modes of no tillage and deep tillage were contrasted. Test results showed that soil bulk density was reduced from 1. 57 gcm3to 1. 51 gcm3,reduction of 0. 06 gcm3,reducing about 4%. Average water content increased 5. 9%. Good water holding capacity was reflected. Subsoiling operation stable infiltration rate increased 62. 5%. Crop yield reached 7. 1% by using subsoiling operation than traditional rotary tillage.
出处
《农业工程》
2013年第S2期85-90,94,共7页
AGRICULTURAL ENGINEERING
关键词
深松
免耕
土壤容重
入渗率
Deep loosening,No tillage,Soil bulk density,Infiltration rate
