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据调查,早熟、中熟和晚熟的水稻,病虫害的发生规律各异;甚到,同属晚熟水稻,早插的和迟插的,其病虫害发生规律也不一样。其原因为虫龄不整齐,一年发生一代的虫龄不整齐,一年发生多代的虫龄就更小整齐了。如三化螟,从羽化始期至羽化盛期到羽化末期达30天以上,羽化盛期也达10天以上。目二化螟后是三化螟再接大螟,还有褐边暝交叉重叠。插秧后,叶色有青黄、豆绿青、绿青、浅乌和大乌的变化,其分蘖期和孕穗期是最浓绿的。螟蛾有趋绿性,最喜欢飞到嫩绿的禾田产卵,为后代找到最好的吃住环境,使世代繁衍下去。 二化螟和三化螟,其孵化成蚁螟后24小时未能蛀孔侵入叶鞘、
According to the survey, early maturing, medium maturity and late maturity of rice, pests and diseases occur differently; even, both belong to late-maturing rice, early plug and late plug, the pest and disease occurrence is not the same. The reason is irregular bugs, a generation of insects a year untidy, many generations of pests in a year is even smaller tidy. Such as Borer, from the beginning of eclosion to eclosion to the end of eclosion for more than 30 days, eclosion peak also reached more than 10 days. After the second rice stem borer after another access to Sesamiao inferens, as well as the cross-overlap of the brown border. After transplanting, leaf color is green, green beans green, green, light black and big black changes, the tillering and booting stage is the most green. Pyralidae tends to green, the favorite fly to the verdant Hetian spawning, to find the best living and living environment for future generations, so that generation generations continue. Chilo suppressalis and Chilo suppressalis, did not penetrate into the leaf sheath 24 hours after hatching into a rice stem borer,