寒地稻田覆膜节水增产技术研究

Research on Technique of Increasing Output and Saving Water by Covering Plastic Film in Cold Rice Field

寒地稻田覆膜可节省泡田用水16.7m3/667m2,减少本田生育期地下渗漏及稞间蒸发量。平常年份需水量在350～400mm,对应时段的降雨可满足其生理生态用水。由于地膜保肥可一次性施底肥,一次性封闭灭草,节省肥、药费用30元/667m2。日增地温1.5～2.0℃。稻谷千粒重增加2g,产量550kg/667m2,增产10%以上,质量明显提高。