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自从1968年褐稻虱大发生以来,全国各地对褐稻虱各虫态历期作了很多研究。我们于1976至1979年,在16～30℃的温度范围内对褐稻虱各虫态历期作了较系统的观察。现将试验结果报导如下,供预测时参考。一、试验方法 (一)室外养虫我们把通常的试管养虫法,改为盆栽水稻加尼龙纱罩养虫法,放在避虫笼内变温条件下饲养。此法用盆栽水稻养虫,饲料新鲜,而尼龙纱罩比玻璃管通风透光性好,所以比试管养虫更接近田间自然环境。在避虫条件下的盆栽水稻上,放入褐稻虱进行个体与群体饲养,作如下观察:
Since the occurrence of brown planthopper in 1968, many studies have been made on the status of each of the brown planthopper in the country. In 1976 to 1979, we conducted a systematic observation of the larvae of the brown planthopper in the temperature range of 16 ~ 30 ℃. The test results are reported below, for reference when forecasting. First, the test method (a) Outdoor rearing insects We put the usual test tube feeding method, replaced by potted rice plus nylon yarn cover rearing insects, placed in cage cage temperature conditions for feeding. This method uses potted rice to feed the pests and feed freshly, while the nylon gauze is more permeable and light-permeable than the glass tube, so it is closer to the field natural environment than the test-tube pest. Insect-resistant pot plants under the conditions of rice, into the brown planthopper individuals and groups feeding, for the following observations: