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本文记述了1961年在湖南滨湖区水稻生长季节中每五日调查稻虫的结果。 查明该地区共有水稻害虫46种。田间虫口密度大小因稻田类型和季节的不同而异,早稻田和中稻田有7种害虫数量较大,一季晚稻田有9种,双季晚稻田有4种。 全年内各种主要稻虫种群数量高峰出现的时间、次数、以及峰态的高低均有不同。种群数量较大的害虫,依其高峰期出现的迟早顺序,有稻象虫、稻蝗、二化螟、褐稻虱、黑尾叶蝉、稻苞虫、三化螟和粉白飞虱等。 在不同历史条件的稻田里,稻虫群体组成及数量互有差异。老稻田稻虫种类较复杂,主要稻虫虫口密度较高。新开稻田稻虫种类较少(如颤蚓、三化螟等),而叶蝉和飞虱等较多。 分析了稻田历史条件、稻由生物学特性、还及气候和食料条件,对于稻虫群体组成及种群数量变动的影响。
This article describes the results of a survey of rice pests every five days in the 1961 rice growing season in Hunan’s Lake District. A total of 46 rice pests were identified in the area. The density of insect population in the field varied according to the type and season of paddy field. There were 7 kinds of pests in the early and middle paddy fields, 9 in the late season and 4 in the double-season late rice. During the year, the number of major rice pest population peaks occurred in different time and frequency, as well as the level of kurtosis. Larvae population pests, according to the peak of the order of its appearance, with rice elephant, rice locust, Chilo suppressalis, brown planthopper, black-tailed leafhopper, rice shell insects, Borer and white pest . In paddy fields with different historical conditions, the composition and population of rice paddy populations are different from each other. The types of rice paddy in the old paddy field are more complicated, and the population density of the main rice paddy is higher. New rice paddy rice species less (such as viburnum, Borer, etc.), and leafhoppers and planthoppers and more. The effects of historical conditions, rice biological characteristics, climatic and foodstuff conditions on population composition and population changes of rice paddy were analyzed.