Nilaparvata lugens ; field populations ; biotype 1 populations ; specific analysis .

褐飞虱；田间种群；生物型1种群；特异分析。

The developmental threshold temperature and the effective accumulated temperature of the red biotype of macrosiphum avenae .

红体色麦长管蚜发育起点温度和有效积温。

Based on the observation of free diffusion in petri dish and biology , the selection behavior and biological parameters of bemisia tabaci gennadius biotype b on host plants cucumber , eggplant , pepper , cotton , and sweet potato were investigated .

通过培养皿内自由扩散观察和生物学观察，对黄瓜、茄子、辣椒、棉花和甘薯上b型烟粉虱的寄主选择性和生物学参数进行了研究。

Pot experiments were conducted to preliminary study the effects of biotype rice specific fertilizers in black soil .

本研究以黑土作为供试土壤，采用盆栽的方法，对生物型水稻专用肥应用效果进行初步研究。