【摘要】 采用膜沟灌溉方式研究了夏玉米的生长状况及产量、水分利用效率。结果表明,膜沟灌溉在一定程度上抑制了棵间蒸发,促进了夏玉米早期植株生长;与普通沟灌相比,膜沟灌溉的绿叶覆盖地面时间较早,植株叶面积高峰期前移且稳定期较长;膜沟灌溉在降低耗水量的同时,可以使水分利用效率提高约18%而不会降低产量;综合分析夏玉米的产量、水分利用效率、株高、穗长及百粒重等因素,结果表明膜沟灌溉优于普通沟灌。更多还原

【Abstract】 Film-furrow irrigation is designed for summer maize irrigation and tested for its growth,yield and water use efficiency.The results show that film-furrow irrigation,on some degree,could reduce the soil evaporation and promote the early growth of summer maize.The time of leaves covering the ground under film-furrow irrigation is early than that under common furrow irrigation.The leaf area climax moves forward and has a long stationary phase.Film-furrow irrigation can reduce water consumption;meanwhile,the water use efficiency can be increased about 18% with no significant difference of yield.Comprehensively considering the factors of yield,water use efficiency,plant height,ear length and 100 grains weight,it can be concluded that film-furrow irrigation is superior than common furrow irrigation.更多还原