《灌溉量对玉米生育后期脱水阶段子粒水分的影响》
文献类型: 中文期刊
作者: 王凤;;薛军 ;;王群;;陈江鲁 ;;张国强 ;;王克如;;明博 ;;侯鹏 ;;谢瑞芝 ;;李少昆
作者机构:
关键词: 玉米;;灌溉量;;种植密度;;生理成熟;;子粒水分
期刊名称:玉米科学
ISSN: 1005-0906
年卷期: 2020 年
页码:
收录情况: 北大核心(2020版) ; CSCD(2020-2021年度) ; 农林核心(2020版) ; 科技核心(2020版)
摘要: 以玉米品种先玉335、九圣禾2468为试验材料,测定不同灌溉量处理的玉米生理成熟至田间收获期间子粒含水率的变化。结果表明,生育期等量灌溉和分配灌溉量试验,在9.0×104 株/hm2、12.0×104株/hm2种植密度下,灌溉量增加使子粒含水量呈增加趋势,且脱水速率减慢。灌溉量从3 600 m3/hm2增至7 200 m3/hm2,子粒含水率分别增加 0.94~2.87 个百分点,差异达显著水平。灌溉量与种植密度双因素辅助试验,在种植密度 6.0×104 株/hm2至13.5×104 株/hm2时,灌溉量从 3 000 m3/hm2增至 6 000 m3/hm2,子粒含水率分别增加 1.60~5.00 个百分点;在灌溉量3 000 m3/hm2和6 000 m3/hm2条件下,种植密度从6.0×104 株/hm2增至13.5×104株/hm2,子粒含水率有差异,无明显增加或降低趋势;4 500 m3/hm2灌溉量下各种植密度处理间的子粒含水率未表现出显著差异。
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