深松对土壤理化性质和冬小麦生长特性的影响

Effects of subsoiling on soil physical and chemical properties and growth characteristics of Winter Wheat

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，本项目自2009年开始在北京市大兴区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＋深松”和“免耕”两种技术模式对土壤容重、含水率、养分及作物生长特性和产量的影响。试验表明，“免耕＋深松”与“免耕”相比，在20~40cm土层内的土壤容重平均降低了约2．9％；收获期10—30cm土层内的土壤含水量提高1．7％～3．8％；增产7．19％。

In order to improve the Beijing area farmland soil structure, improve soil water holding capacity, improve the agricultural production capacity, increasing crop yield. The project study on the effect of subsoiling farmland at conservation tillage experimental field in Beijing Dax- ing district since 2009, comparative analysis of no tillage and no tillage, subsoiling 2 modes on the effects of soil bulk density, moisture content, growth characteristics and nutrient and crop yield. The test results show that, compared with the no tillage, no tillage, subsoiling technology model 20--40cm soil layer, soil bulk density was reduced by an average of about 2.9%, in the harvest period, soil water moisture in 10-30cm soil layer was higher than the contrast 1.7%-3.8%, yield increase of 7. l 9%.