辽西地区膜下滴灌玉米高水效品种筛选与评价

Screening and Evaluation of High Water Use Efficiency Maize Varieties with Drip Irrigation under Mulching Plastic Film in Western Liaoning Province

以10个玉米品种为试材,研究辽西地区膜下滴灌对不同玉米子粒产量和水分利用效率的影响,表明灌溉与不同玉米品种产量互作显著,各灌溉处理总耗水量(ET)差异均不显著,部分灌溉高产品种的水分利用效率差异不显著,不同品种灌水利用效率(IWUE)差异显著,豫丰508与新单001的IWUE较高,分别为2.07 kg/m3与2.02 kg/m3;通过聚类分析将玉米划分为低水效和高水效品种,表明高水效品种产量比低水效品种增产,辽单1211(产量最高为955.43 kg/667m2)是子粒产量和水分利用效率兼顾的最优品种,高水效品种增产的主要原因是行粒数、百粒重的显著增加。

To study the effects of drip irrigation under mulch on maize grain yield and water use efficiency, 10 maize varieties in western Liaoning province were used. The results showed that interaction between irrigation and different maize varieties was significant. There was no significance on water consumption （ET） under different irrigation treatments. There was no significance in water use efficiency （WUE） of a part of high-yield varieties. There was significance in irrigation water use effieiency（1WUE） of different varieties, which value of IWUE of Yufeng508 with 2.07 kg/m^3 and Xindan001 with 2.02 kg/m^3 were high. Dividing low and high water use efficiency varieties of maize by cluster analysis, grain yield of high water use efficiency variety was higher than that of low water use efficiency varieties. Liaodan1211 is the best variety with high grain yield of 955.43kg/667m^2 and water use efficiency. The reasons of increasing grain yield of high water use efficiency variety were number of kernels row and 100 kernel weight.