不同矿化度灌溉水对春小麦种子萌发特性的影响

为解决南疆小麦生产上日益缺水的问题，探索了小麦种子萌发对不同水质的响应，将3个春小麦品种的种子置于4种不同矿化度的水环境中进行发芽试验，对不同品种萌发和根系生长指标进行测定分析。结果表明:随着矿化度的升高，3个春小麦品种的萌发特性指标均下降。根据主成分分析将7个小麦萌发及根系生长指标简化为2个关键因子指标，建立综合评价体系，最终得出综合排名前三的处理分别为:蒸馏水浇灌新春15号、自来水浇灌新春15号和蒸馏水浇灌新春8号，主成分综合得分分别为1.56、0.81、0.53；微咸井水浇灌新春6号综合排名最低。综合分析认为，蒸馏水浇灌新春15号综合表现最好，但使用蒸馏水灌溉成本过高，由于新春15号耐盐性最强，可推荐在生产中应用；并结合实际情况推荐在当地春小麦生产中用绿化灌溉水全部或部分替代农业灌溉水进行灌溉。

Effects of Irrigation Waterwith Different Contents of Total Dissolved Solidson the Germination Characteristics of Spring Wheat Seeds

In order to solve the issue of water shortage, explore the response of wheat seed germination to different water quality, germination experiment was conducted on 3 spring wheat varieties(Xinchun 15, Xinchun 8 and Xinchun 6) seeds in 4 different germination water with diverse contents of total dissolved solids(distilled water 0 mg/L, tap water 495 mg/L, green irrigation water 772 mg/L and brackish well water 4 152 mg/L), germination and root growth parameters of different varieties were determined and analyzed. The results showed that with the rise of salinity, three spring wheat varieties germination parameters were decreased. According to the principal component analysis, 7 wheat germination and root growth parameters were simplified to two key factors, and a comprehensive evaluation system was established. The top three treatments were: Xinchun 15 with distilled water, Xinchun 15 withtap water and Xinchun 8 with distilled water. The comprehensive scores of principal components were 1.56,0.81 and 0.53, respectively, and the comprehensive ranking of Xinchun 6 with brackish well water was the lowest. According to the comprehensive analysis, the comprehensive performance of Xinchun 15 with distilled water was the best, but the irrigation cost of using distilled water is too high. Due to the strongest salt tolerance of Xinchun 15, thisvariety can be promotedin localproduction. Combined with the actual situation, it is recommended to use green irrigation water to completely or partially replace agricultural irrigation water for irrigation in local spring wheat production.