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该文探讨了1989～1996年新疆塔城市麦双尾蚜DiuraphisnoxiaMordvilko年度间种群数量和降水量的关系，利用降水模拟方法分析降水因素对麦双尾蚜种群数量的影响，并调查了田间不同灌溉水平的植株上麦双尾蚜的数量。结果显示：6月下旬春麦田麦双尾蚜种群数量和当年4月份和5月份的降水总量存在明显负相关性（r=－0．92），与5月上旬和6月中旬降水总量存在明显负相关性（r=－0．78），并且与上年7月中下旬降水量存在明显正相关性（r=0．67），这些相关性表明4～5月份降水对麦双尾蚜种群增长不利，5～6月上旬降水对麦双尾蚜从冬麦迁入春麦不利，7月降水有利于麦双尾蚜种群增长，并依据4～5月降水量（X）和春麦田麦双尾蚜数量（Y）建立了回归方程Y=4．9－0．048X。田间和实验室内模拟降水可以明显降低麦双层蚜种群数量。田间相对干旱地段麦双尾蚜数量明显高于湿润地段，并且干旱地段麦双尾蚜被菜蚜茧蜂DiaeretiellarapaeM’Intosh寄生的百分率相对较低。
This paper explored the relationship between population and precipitation in Diuraphis noxiaMordvilko in the urban area of Tacheng, Xinjiang from 1989 to 1996, analyzed the effect of precipitation on the population of wheat aphid, and studied the effects of different irrigation levels The number of wheat aphid on wheat plants. The results showed that there was a clear negative correlation between the population of wheat aphids and the total precipitation in April and May (r = -0.92) in late June, and the precipitation in early May and mid-June There was a significant negative correlation (r = -0.78), and there was a significant positive correlation with the precipitation in the middle and late July (r = 0.67). These correlations showed that precipitation from April to May had a positive correlation Aphid population unfavorable growth, early May ~ June precipitation on the wheat aphid moved from the winter wheat into the spring wheat adverse, July precipitation is conducive to wheat aphid population growth, and based on April to May precipitation (X) and spring wheat field Wheat aphid number (Y) established regression equation Y = 4.9-0.048X. Field and laboratory simulated precipitation can significantly reduce the number of wheat aphids population. The number of wheat aphid in the field was relatively higher than that in the wet area, and the percentage of the wheat aphid parasitoid DiaeretiellarapaeM’Intosh parasitized in the arid area was relatively low.