保护性耕作土壤肥力动态变化的研究—秸秆覆盖对土壤水分的影响(Ⅱ)  

Study of Dynamics Variation of Soil Fertilizer in Conservation Tillage—The Effect of Covering Straw on Soil Moisture(Ⅱ)

作　　者：马春梅[1] 孙莉[2] 唐远征[1] 刘艳[3] 董守坤[1] 李姚[1] 金喜军[1] 龚振平[1] 

机构地区：[1]东北农业大学,哈尔滨150030 [2]北安市农业技术推广中心,黑龙江北安164000 [3]五常市农业技术推广中心,黑龙江五常150200

出　　处：《农机化研究》2006年第5期54-56,共3页Journal of Agricultural Mechanization Research

基　　金：国家"863"计划项目(2002AA6Z325);国家攻关项目(2004BA907A26);黑龙江省科技重大项目(GA02B701);黑龙江省科技重点项目(GB03B303)

摘　　要：在3种秸秆覆盖量(CK0kg/hm2、A14000kg/hm2、A28000kg/hm2)条件下,研究了玉米田土壤水分的动态变化,其结果表明:秸秆覆盖处理可以增加土壤水分,主要表现在作物生育前期(7月份以前),以20cm土层内效果明显;秸秆覆盖处理增加土壤水分的效果,覆盖量4000kg/hm2要明显好于8000kg/hm2。This work had researched the dynamics of soil moisture in maize field under three cultivation treatments： routine cultivation, half covering straw ＋ minimum tillage, and whole covering straw ＋ minimum tillage. The result showed： the treatment of covering straw could increase soil moisture, mainly in the previous development （before July）, and obviously in soil layer of 20cm. The effect of increasing soil moisture treatment under the cover measures 4000kg/Hm^2 obviously wants to be good in 8000kg/Hm^2 .

关 键 词：农艺学 保护性耕作 理论研究 土壤肥力动态变化 土壤水分 

分 类 号：S345[农业科学—作物栽培与耕作技术]