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作者从1969年起,在鹿儿岛县鹿屋市周围的旱田作物地带,主要对禾本科饲料作物上的粘虫进行了种群动态的研究。这里,简略介绍一下当地粘虫在一般发生时的发生生态的见解,同时进一步探讨一下日本粘虫的发生生态。发生和消长 1、成虫的消长:这里采用了以糖蜜诱杀所得的发生消长资料。如图1各年的上段图所示,1969年看到4次诱杀高峰,1970年和1971年5次,其中以第2次和第5次的高峰最大。根据1975年前的资料,鹿儿岛粘虫成虫的诱杀日期,第1次在3月下旬至5月中旬,第2次在6月中旬至7月中旬,第3次在8月上旬至下旬,第4次在9月上旬至10月上旬,第5次在10～12月。
The authors studied the population dynamics of armyworms on gramineous forage crops in dryland crops around Deokya in Kagoshima Prefecture since 1969. Here, a brief introduction to the local occurrence of Mythimna separata occurs in the ecology of the general view, at the same time to further explore the occurrence of Japanese armyworm ecology. Occurrence and growth and decline 1, the growth and decline of adults: Here’s the use of molasses to kill the resulting growth and decline of information. As shown in the upper graph of each year of Figure 1, four trapping and killing peaks were observed in 1969, five times in 1970 and 1971, with the second and fifth peaks being the largest. According to the data before 1975, the trapping dates of armyworm adults in Kagoshima from late March to mid-May, the second from mid-June to mid-July, and the third in early August to late , The fourth in early September to early October, the fifth in 10 ~ December.