秸秆覆盖量对夏玉米产量影响的试验研究  

The Influence of Straw Mulch Amount to Summer Maize Yield

作　　者：刘超[1] 汪有科[1] 湛景武[1] 杨直毅[1] 

机构地区：[1]中国科学院水利部水土保持研究所

出　　处：《灌溉排水学报》2008年第4期64-66,共3页Journal of Irrigation and Drainage

基　　金：国家863节水农业重大专项项目(2002AA2Z4211);陕西省重大项目(2006kz08-G3)

摘　　要：通过对夏玉米在露天和干旱棚控水2种土壤水分状况下生长状况的观测,发现秸秆覆盖夏玉米有明显增产效应,作物水分利用效率均得到了不同程度提高。通过对0、3000、6000、9000、12000 kg/hm2五种处理下玉米状况的对比,得出6000 kg/hm2为渭河平原地区最适宜夏玉米田秸秆覆盖量。在6000 kg/hm2覆盖量下,露天小区夏玉米可增产5.61%。试验证明,渭河平原地区秸秆覆盖夏玉米,增产潜力大,是一种值得推广的玉米增产措施。Through conversation of the maize growth under the rain-shelter and open space, it can be concluded that maize yield can be increased obviously and the water use efficiency of crop can also be improved. It is found that 6000 kg/hm^2 is the best covering amount for the maize in Weihe plain through the comparison of the summer maize under the 0.3000,6000.9000,12000 kg/hm^2 straw mulch covering, The maize yield can be increased by 5.61% and the water use efficiency can be increased by 4.39% respectively under the 6000 kg/hm^2 covering. So it can be concluded that the straw mulch covering to summer maize can increase yield and it is a way that worth expanding.

关 键 词：秸秆覆盖量 土壤含水量 夏玉米 产量 水分利用效率 渭河平原地区 

分 类 号：S513[农业科学—作物学]