摘要
采用18、21、24、27、30℃5个温度对菜蛾（Plutella xylostella L）各虫态（龄）发育起点温度和有效积温进行了测定。结果表明，卵、幼虫、蛹在18-30℃范围内均能正常生长发育，尤以24-27℃条件下最适宜于菜蛾的生长发育，发育速率与温度呈直线关系。卵、一龄幼虫、二龄幼虫、三龄幼虫、四龄幼虫和蛹的发育起点温度分别为11．07、9．49、9．96、10．20、9．96、8．96℃，有效积温分别为47．10、36．90、34．03、33．62、34．03、72．83日·度。在宁夏菜蛾一年可发生6～7代，在沙芥生长期发生3～4代。
The threshold temperature and effective accumulate temperature of Plutella xylostella were tested at the following five constant temperatures（ 18,21,24,27,30℃ ）. The results showed that egg, larva and pupa can normally develop between 18--30℃. The optimal temperatures of the growth and development were between 24-27℃. All the relationships betweens developing rate and temperature followed linear forms. The threshold temperature of 1st larva, 2nd larva,3rd larva, 4th larva ,pupa were 11.07,9.49,9.96,10.20,9.96 and 8.96℃ respectively. The effective accumulate temperature were 47.10,36.90,34.03,33.62,34.03 and 72.83 day-degrees, respectively. It took place 6-7 gener ations in one year of Ningxia, and it took place 3-4 generations in growth period of P. cornuturn.
出处
《西北农业学报》
CAS
CSCD
北大核心
2006年第2期88-90,共3页
Acta Agriculturae Boreali-occidentalis Sinica
基金
国际泥沙研究培训中心(2005-01-05)资助项目
关键词
菜蛾
发育起点温度
有效积温
Plutella xylostella L
Threshold temperature
Effective accumulate temperature
