干旱地区农业研究2013，Vol.31Issue(1)：101-106,6.
农艺措施和保水剂对土壤蒸发和夏玉米水分利用效率的影响
Effects of agronomic measures and water-retaining agent on soil evaporation and water use efficiency of summer maize(Zea mays L.)
摘要
Abstract
In order to improve the water-saving cultivation of no-tillage summer maize ( Zea mays L. ) in Huang -Huai - Hai area, the effects of agronomic measures (including compacting after sowing and straw mulching) and water-retaining agent on soil evaporation and water use efficiency ( WUE) of maize were explored with field tests in 2011. The results showed that the average soil water content in 0 ~ 40 cm during the whole growth period of maize under the treatments of A (compacting after sowing) , B (compacting after sowing + straw mulching) , C (compacting after sowing + water- retaining agent) and D (compacting after sowing + straw mulching + water-retaining agent) was increased by 4.78% , 7.%% , 5.50% and 11.08% respectively, compared to that under E (covering soil after sowing); the soil e-vaporation was inhibited by 16.33%, 103.78%, 28.37% and 128.77% respectively; the yield was improved by 9.68%, 17.60%, 11.78% and 24.01% respectively; and the water use efficiency was raised by 9.64% , 17.55%, 11.71% and 23.96% respectively. The benefit increased by 1 536.34、2 516.42、801.74、2 553.10 yuan/hm2. The effects of different treatments were most significant in the early growth stage of maize. Before jointing stage, the average soil water content under A, B, C and D was increased by 8.74% , 15.81% , 10.48% and 20.28% respectively, and the soil evaporation was inhibited by 17.81% , 164.68% , 40.35% and 209.43% respectively, compared to that under E. The treatment of D, which integrated the effects of compacting after sowing, straw mulching and water-retaining a-gent, could fully enhance the soil water content and inhibit soil evaporation. It is recommended that compacting after sowing and straw mulching be practiced in summer maize cultivation in Huang - Huai - Hai area, and water-retaining a-gent be added in the conditional place.关键词
夏玉米/农艺措施/保水剂/土壤蒸发/水分利用效率Key words
summer maize/ agronomic measures/ water-retaining agent/ soil evaporation/ water use efficiency (WUE)分类
农业科技引用本文复制引用
赵霞,黄瑞冬,李潮海,唐保军,常文风..农艺措施和保水剂对土壤蒸发和夏玉米水分利用效率的影响[J].干旱地区农业研究,2013,31(1):101-106,6.基金项目
河南省玉米产业技术体系建设专项(S2010-02-G04) （S2010-02-G04）
