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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 the soil structure of farmland in Beijing, improve soil water storage and soil moisture retention, improve farmland productivity and increase crop yield, we studied on the effect of subsoiling farmland in the conservation tillage field in Yanqing County, Beijing from 2009, Effect of two technical modes of subsoiling on soil bulk density, water cut, water infiltration rate and crop growth characteristics and yield. The results showed that the average soil bulk density decreased from 1.57 g cm3 to 1.51 g cm3, decreased 0.06 g cm3, decreased by about 4.0%. The average mass water content increased 5.9%, indicating better soil moisture capacity The steady infiltration rate of loose operation increased by 62.5%; compared with the control rotary irrigation increased yield by 7.10%.