冀中南节水型冬小麦品种筛选

Screening of Water-saving Winter Wheat Varieties in the Central and South of Hebei Province

为了筛选出适宜冀中南地区种植的高产节水型冬小麦品种,参考抗旱指数的鉴定方法和评价标准,2016~2018年2个试验年度在辛集、赵县、临漳、枣强、隆尧5个县(市)对66个冬小麦品种的节水性进行评价,试验设春1水和春2水2个灌溉处理,研究了不同灌溉处理下参试小麦的节水指数和产量以及二者的相关性。结果表明:参试冬小麦品种中节水性表现为极抗的有3个,表现为强的有28个,表现为中等的有34个,表现为弱的仅1个;春1水处理下平均产量>7500 kg/hm^2的品种有21个。试验点次对参试冬小麦春1水产量与节水指数的相关性影响较大,二者间的相关系数随着试验点次的增加而增大,4个及以上试验点次冬小麦品种的春1水产量与节水指数呈显著正相关(相关系数0.850)。综合节水指数和产量表现,初步筛选出了节水指数≥1.00的冬小麦品种有藁优2018等共计31个。

In order to select the high-yield and water-saving winter wheat varieties suitale for cultivation in the central and south of Hebei Province,referring to the identification methods and evaluation criteria of drought resistance index,water-saving of 66 winter wheat varieties was evaluated in Xinji,Zhaoxian,Linzhang,Zaoqiang and Longyao from 2016 to 2018.The experiment was designed two kinds of irrigation treatments with irrigation once and twice in spring.The water-saving index,yield and the correlation of the tested winter wheat varieties under different irrigation treatments were studied.The results showed that there were 3 varieties with the most strong water-saving performance,28 varieties with strong water-saving performance,34 varieties with medium water-saving performance,and only one variety with weak water-saving performance.There were 21 varieties with average yield of greater than 7500 kg/hm^2 under irrigation once in spring.The tested sites greatly influenced the correlation between yield with irrigation once in spring and water-saving index and the correlation coefficient increased with adding the tested sites.The correlation coefficient was 0.850 at four tested sites and above.According to water-saving index and yield performance,31 varieties such as Gaoyou 2018 with water-saving index≥1.00 were preliminarily screened out.