条沙叶蝉生物学与生态学研究

作者依据成虫产卵、若虫存活与发育等指标测定了条沙叶蝉对19种供试禾本科作物及杂草的寄主适应性,明确寄主植物14种,食料植物4种,非寄主食料植物1种。同时发现,不同小麦品种对条沙叶蝉存在不同程度抗虫性。通过室内试验和田间调查,明确条沙叶蝉各虫态生活习性及在关中年生活史和发生特点,在关中,条沙叶蝉1年发生4代,以卵越冬,全年各世代主要在杂草地完成周年发育循环,麦田发生条沙叶蝉主要是在小麦秋苗期。在20、25、30、35℃4种恒温与狗尾草、小麦、玉米3种食料条件下初步明确温度、食料对条沙叶蝉若虫发育、存活与成虫寿命及产卵的影响。

STUDIES ON BIONOMICS OF PSAMMOTETTIX STRIATUS(L.)

The adaptibility of Psammotettix striatus (Linnaeus), a predominant leaf hopper species in wheat fields in Gansu and Shaanxi Provinces,to 19 species of gramineous crops and weeds were tested,based on some norms such as the fertility of adult and survival and development of nymph,etc. The results showed that in these species, 14 host plants,4 food plants and 1 nonhost were determined. It was found that some wheat varieties were resistant in varying degrees to this insect pest. After indoor and field investigations, it was indicated that there are 4 generations of P. striatus a year in Guanzhong, Shaanxi Province,it overwinters with egg in dead leaves and leaf sheaths of weeds and wheat, and feeds on wheat mainly in seedling stage. The effects of temperature, food quality on the development, survival and lifespan and oviposition of adult were initially defined.