Effect of Different Irrigation Patterns on Stem Structure,Yield Composition and Water Use Efficiency of Winter Wheat in Huanghuai Region
To screen water-saving varieties and provide management guidance for variety production and planting,promotion varieties in the Huanghuai region were selected to analyze the changes in plant height and stem structure,yield composition,and water use efficiency(WUE)of different varieties under three modes:only base fertilizer(W0),base fertilizer+water at jointing stage(W1),and base fertilizer+water at jointing stage and grouting stage(W2).The results showed that:(1)compared to W0,the plant height,stem length under spike,the length of penultimate internode and the 3rd internode from top increased significantly under W1 treatment,with the largest increase in the stem length under spike,and the basal internode changes were not significant;compared to W1,there was an increase in plant height under W2 treatment,but the increase of each internode was not significant;compared to W0,the plant height of'Zhoumai 18'and'Luomai 28'increased significantly under W2,with increase of 36.49％and 35.30％respectively;under W1 and W2 treatments,the basal internode length of'Zhengmai 129'was the largest,and attention should be paid to fertilizer and water management to prevent lodging during production and utilization;(2)compared to W0,under W1 treatment,ear number per plant and the number of grains per panicle increased significantly,and the thousand grain weight decreased significantly,resulting in a significant increase in yield;compared to W1,W2 treatment showed a significant increase in thousand grain weight and yield,while other differences were not significant;(3)compared to W0,WUE of varieties under W1 treatment increased significantly,and'Fengdecun 12'and'Luomai 28'had the highest WUE;compared to W1,WUE of varieties under W2 treatment was significantly lower than that under W,treatment,with'Fengdecun 12'and'Luomai 28'still had the highest WUE.
irrigation patternsHuanghuai regionwinter wheatplant height compositionyield compositionwater use efficiency(WUE)
万方数据
维普
