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稻纵卷叶螟在我国各发生区域内都有明显的季节性生殖停滞现象,而这种生殖停滞的时期也正在与各区域内季节性迁出的时间相吻合。本文是在人工模拟条件下,探索引起这种季节性生殖停滞或迁飞的生态信息,以期达到予测迁飞的目的。 在1980年进行了温度、光照周期、食料条件三个因素的8个处理的试验,结果表明: 1、无论在什么处理下,食料对生殖仃滞或迁飞均无显著影响。虽然从卵巢发育的平均速度来比较,取食抽穗期水稻的个体卵巢发育稍慢于取食分蘖期食料的。 2、各处理下的分析表明,短光照和升温是诱发生殖仃滞或迁飞的主导生态因子,二者并有相互制约的效应。 对照自然情况,夏季长光照条件下,高温是诱发迁出的主导因素,而在秋季降温条件下,短光照是诱发迁出的主导因素。
Rice leaf roller in the occurrence of all regions of our country have obvious seasonal reproductive stagnation, and this period of reproductive stagnation is also moving out of the region with seasonal coincidence. This article explores the ecological information that causes the stagnation or migration of seasonal reproduction under the conditions of artificial simulation in order to achieve the purpose of predicting migration. In 1980, the temperature, light cycle, food conditions, the three factors of the eight treatments, the results showed that: 1, no matter what the treatment, the food has no significant effect on reproduction stagnation or migration. Although the average ovarian development from the comparison of the rate of oviposition of rice individual development of the ovaries slightly slower than feeding tillering food. The analysis under each treatment showed that short-light and temperature-rising were the dominant ecological factors that induced reproductive delay or migration, both of which had the restrictive effect. According to the natural conditions, under the condition of long summer light exposure, high temperature is the predominant factor that induces evacuation, while under the condition of autumnal fall, short light is the predominant factor inducing evacuation.