一九六五年,专区疏勒综合样板田八大队稻田里发生了稻水蝇,秧田和部分直播田的秧苗普遍受害,一般漂秧率7.5—9.6%,严重的37.5%,对生产威胁很大.为此,我们进行了调查与防治,现将结果汇报如下,以供参考.一、发生与为害情况稻水蝇的幼虫(蝇蛆)多发生在肥料多、具有水层的秧田和本田.据调查,其发生为害程度与土表肥料的多少成正相关,与肥料腐熟程度成反相关.多肥秧田,百株苗有蝇蛆52.4头,漂秧率9.6—37.5%;一般直播田百株苗仅有蝇蛆14.8头,漂秧7.5%左右.因跑水而涌入大量饼肥的一坵秧田,蝇蛆大量滋生,漂秧 In 1965, an area of ​​Shule integrated model Tianba team paddy rice paddy fields occurred in rice fields, seedlings and some direct seeding fields generally suffer seedlings, the general floating seedling rate of 7.5-9.6%, a serious 37.5%, the threat to the production of To this end, we conducted a survey and prevention and control, the results are reported below, for reference. First, the occurrence and damage of rice larvae (larvae) occurred in the fertilizer and more water with seedling and Honda According to the survey, the degree of harm and the soil surface fertilizer is positively correlated with the degree of maturity of fertilizer is inversely related to the degree of fat fertilizer seedling, a hundred seedlings have maggot 52.4, floating transplanting rate 9.6-37.5%; There were only 14.8 strains of maggots in the seedlings and about 7.5% of the floating seedlings were flooded with a large amount of cake fertilizer due to running water. Large numbers of fly maggots were breeding and floating seedlings