论文部分内容阅读
褐稻虱Nilaparvata Lugens Stl长翅型和短翅型终年随着环境条件的变化,相互交替发生,借以不断维持种的生存。实践证明,长翅型的大量产生,往往是迁飞(扩散)的征象,短翅型的数量激增,预兆着大发生的到来。说明它们在繁殖为害规律上各具有不同的生态特点。对于这两种翅型是在什么条件下产生的,它们的繁殖为害习性有何不同,以及如何应用翅型分化规律来提高褐稻虱的测报和防治效果,这些问题有深入研究的必要。鉴于上述情况,我们对翅型分化因子进行了一些初步探讨,现将所获结果整理如下。
Nilaparvata Lugens Stl Nilaparvata Lugens Stl Long-winged and short-winged perennial year with the environmental conditions change, alternating with each other in order to continue to maintain species survival. Practice has proved that the emergence of a large number of long-winged type is often the phenomenon of relocation (proliferation), the number of short-wing type surge, a sign of the arrival of the big occurrence. Explain that they all have different ecological characteristics in the law of reproduction damage. These two types of wing shape is generated under what conditions, their reproductive habits and habitats are different, and how to use the wing differentiation rules to improve the brown planthopper test and prevention and control of these problems are necessary for further study. In view of the above situation, we conducted some preliminary studies on the wing-type differentiation factor, the results obtained are summarized below.