【摘要】 以杂交稻组合汕优63、常规粳稻品种秀水63和常规籼稻品种浙733为材料,采用室内继代饲养的方法,研究了不同类型水稻品种上施用氮肥对白背飞虱生长发育、存活率和繁殖等的影响。结果表明,施用氮肥可以显著提高白背飞虱种群生态适应性。同一水稻品种,在施用氮肥的植株上白背飞虱若虫历期缩短,随着取食代数的增加,在不施氮稻株上的若虫历期明显延长,而在施氮稻株上的若虫历期则明显缩短。白背飞虱若虫存活率随着施氮而显著提高,品种和饲养代数对其存活率也均有着极显著的影响。在施氮水稻植株上的白背飞虱雌成虫体质量和产卵量均显著高于不施氮肥上的。随着饲养代数的增加,同一品种的施氮稻株上雌成虫体质量、产卵量及卵孵化率均增加,而在不施氮稻株上则相反。水稻品种、饲养代数和氮肥水平对白背飞虱雌成虫体质量和产卵量均有着极显著的影响。更多还原

【Abstract】 The ecological fitness including nymphal development duration,survival rate,female adult weight and fecundity of the whitebacked planthopper (WBPH) on rice varieties Shanyou 63(hybrid),Xiushui 63(japonica) and Zhe 733(indica) at different nitrogen fertilizer levels were investigated. The WBPH population on the same rice variety with high nitrogen application (NH) developed more quickly than that without nitrogen application (NL). The nymphal duration shortened on the NH rice plants and prolonged on the NL rice plants with increasing WBPH generation. The survival rate of nymph was significantly increased with nitrogen application. Higher body weight and fecundity of the female adult and hatchability of eggs were observed in WBPH feeding on NH rice plants than those on NL rice plants. And the same trends were noted in the increasing WBPH generation. There were significant effects of rice varieties,nitrogen levels and WBPH generation on the weight and fecundity of the female adult.更多还原