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用TN1、N2 2 、AsD7和Ptb33 等 4个抗虫性差异明显的水稻品种测定了褐飞虱和白背飞虱在它们上面的栖息率、落卵量、卵存活率、若虫存活和发育状况 ,以及后代种群数量表现 .结果表明 ,Ptb33 通过减少 2种飞虱的栖息率、落卵量 ,降低卵和若虫存活率 ,延长若虫的发育时间 ,抑制后代的种群数量增长 ,表现出明显的抗性 .N2 2 对白背飞虱、AsD7对褐飞虱的后代种群建立与发展均表现明显的抑制作用 .2种飞虱在TN1上 ,以及褐飞虱在N2 2 上和白背飞虱在AsD7上 ,种群发展较快 .这可能与这 4个品种对各自所作用的飞虱在栖息率、落卵量、卵存活率、若虫存活和发育状况影响不大有关 .文中讨论了 2种飞虱种群数量变化与水稻品种更替的关系 ,指出了利用水稻品种抗性抑制稻飞虱种群增长的可能性 .
The habitat rate, egg yield, egg survival rate, nymphal survival and development status of Nilaparvata lugens and Sogatella furcifera were determined using four rice cultivars with significantly different insect resistances, TN1, N2 2, AsD7 and Ptb33. The results showed that Ptb33 showed obvious resistance by reducing the habitat and egg loss of two planthoppers, reducing the survival rate of eggs and nymphs, prolonging the developmental time of nymphs and inhibiting the population growth of offspring. N2 2 had a significant inhibitory effect on the establishment and development of the progeny population of N. lugens, both of which showed rapid population development on TN1, N2 2 and Asi 7 on AsD7 This may be related to the four species on their role in the habitat rate, egg loss, egg survival, nymphs survival and development status of little effect.This paper discusses the two species of planthopper population changes and rice varieties Replacement relationship, pointed out that the use of rice variety resistance to inhibit the possibility of planthopper population growth.