安徽农业科学2023，Vol.51Issue(24)：209-212,4.DOI:10.3969/j.issn.0517-6611.2023.24.046
不同生育时期膜下滴灌谷子叶面积折算系数和叶面积指数的变化规律
Change Laws of Leaf Area Conversion Factor and Leaf Area Index of Drip Irrigation under Plastic Film in Different Growth Periods of Millet
摘要
Abstract
Aiming at the problems of low single industrial benefit,serious shortage of water resources and low utilization rate of water re-sources in Hongsipu District of Wuzhong City,taking drip irrigation of millet under plastic film as the research object,the change laws of leaf area conversion factor and leaf area index(LAI)of millet under drip irrigation under plastic milk in different growth periods were studied by u-sing the data in 2022.The results showed that the leaf area conversion factor of millet in four growth stages were 1.42,1.50,1.53 and 1.50 re-spectively.After verification,R2 were 0.997,0.991,0.986 and 0.990 respectively,and Nash efficient coefficient were 0.992,0.989,0.979 and 0.984 respectively.The simulation results of leaf area conversion factor were good.The leaf area index in the whole test area in different periods showed the variation laws of gradual growth and the growth rate gradually decreased.The leaf area index in the grain-filling maturity stage was 6.96.The leaf area index under different test treatments showed the variation of increase.The leaf area index under J90,Q110,B110,J110,B130,J130 and B150 treatments showed a negative increasing trend in the late growth period.The leaf area index in filling and mature stage under B110,B130,B150 treatments was reasonable.Under the high-yield irrigation system,the average grain yield first decreased and then in-creased as the leaf area index increased.The above results provided some reference basis for the leaf area measurement and the related study with the leaf area index and yield.关键词
谷子/膜下滴灌/叶面积折算系数/叶面积指数/灌溉制度/产量Key words
Millet/Drip irrigation under plastic film/Leaf area conversion factor/Leaf area index/Irrigation system/Yield分类
农业科技引用本文复制引用
卓宝著,尹娟,徐利岗,王文..不同生育时期膜下滴灌谷子叶面积折算系数和叶面积指数的变化规律[J].安徽农业科学,2023,51(24):209-212,4.基金项目
宁夏重点研发计划项目(2021BBF02019). （2021BBF02019）
