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辽宁省植物保护学会,于1965年12月中旬在沈阳召开了高粱蚜虫学术会议。会议对我省高粱蚜虫从1961年以来连续大发生的原因和预测预报方面的问题做了充分的讨论和分析,同时并着重总结和交流了一年来各地对高粱蚜虫的防治经验。参加会议的代表们认为,近几年我省高粱蚜虫发生十分严重,面积逐年扩大的主要原因是高温、干旱,条件适宜。据十年来的调查资料分析,6月中、下旬连续两旬的平均气温在22℃以上,同旬平均降水量在25毫米以下时,是造成大发生的适宜条件。而温、
Liaoning Province Plant Protection Society, in mid-December 1965 in Shenyang held a sorghum aphid academic conference. The meeting made a full discussion and analysis of the reasons for continuous occurrence of sorghum aphids in our province since 1961 and prediction and forecasting. At the same time, the meeting summarized and exchanged experiences of prevention and control of sorghum aphids throughout the year. Delegates attending the meeting believe that in recent years, a serious incidence of sorghum aphids in our province, the main reason for the area is expanding year by year, high temperature, drought, suitable conditions. According to the survey data from the past ten years, the average temperature of mid-to-late ten-day consecutive months in June is above 22 ℃ and the average precipitation in the same period is below 25 mm, which is the suitable condition for large occurrence. And warm,