豫西旱作麦区灌水对旱地小麦产量和水分利用效率的影响

摘要

利用当地生产中主推小麦品种在不同灌水处理条件下的表现,分析豫西旱作麦区生态条件下,小麦品种选择和水分优化管理,以期为豫西小麦生产中品种选择、水分优化管理提供理论支撑.结果表明:产量表现,洛旱6号和洛旱7号以灌拔节水处理为最高,较灌拔节水+开花水处理和不灌水处理增产3.33％～33.16％;洛旱8号以灌拔节水+开花水处理最高,较灌拔节水处理和不灌水处理增产6.99％～44.45％.水分利用效率表现,洛旱6号灌拔节水处理和不灌水处理较灌拔节水+开花水处理提高了31.08％和18.20％;洛旱7号不灌水处理较灌拔节水处理和灌拔节水+开花水处理提高了13.88％和38.99％;洛旱8号灌拔节水处理较灌拔节水+开花水处理和不灌水处理提高了5.48％和12.95％.因此,应针对不同品种优化水分管理,以达到高产量和高水分利用效率双赢.%The performance of the main popularized wheat varieties under different irrigation conditions was analyzed comprehensively,in order to provide theoretical support for wheat variety selection and water optimization management under Yuxi dryland wheat ecological conditions.The results showed that yield performance:The yields of'Luohan 6'and'Luohan 7'were the highest when irrigated at jointing stage.They were 3.33 ％-33.16 ％ higher than those of irrigated at jointing stageand flowering stage,or no irrigation.The yields of'Luohan 8'when irrigated at jointing stage and flowering stage was the highest,which was 6.99％-44.45 ％ higher than that of irrigated at jointing stage and no irrigation.The water use efficiency performance of'Luohan 6'irrigated at jointing stage and no irrigation were 31.08％ and 18.20％ higher than that irrigated at jointing stage and flowering stage respectively.The water use efficiency performance of'Luohan 7'with no irrigation was 13.88％ and 38.99％ higher than that irrigated at jointing stage and flowering stage respectively.The water use efficiency performance of'Luohan 8'irrigated at jointing stage were 5.48％ and 12.95％ higher than that irrigated at jointing stage,flowering stage and no irrigation respectively.In order to achieve a win-win situation of high yield and high water use efficiency,water management for different varieties should be optimized.