在这种情况下越冬幼虫存活率高,成为下一年的虫源。
In this condition the overwintering larva survived with very high percentage and became the first source in coming year.
本文运用NTC-TD热敏电阻法测定了桑螟越冬幼虫的过冷却点、冰点。
NTC-TD heat-sensitive resistance is used to measure the super cooling-point (SCP)and freezing point of over-wintering larvae of Diaphania pyloalis;
越冬幼虫以“小分子糖—氨基酸—糖蛋白”物质系统形成抗寒基质,增强耐寒性。
So there is a substance system including "low molecular weight sugars-amino acid-glycoprotein" which enhances cold hardiness for overwintering larvae.
林间防治试验表明,在大发生初期采用油烟剂防治,在一般发生年份应用白僵菌防治越冬幼虫均有良好效果。
The results have shown that it is effective by spraying Oil-Smoke agent in the beginning of serous emerging year or using the Beauveria bassiana to control the overwintering larvae in normal year.
五颜六色的巢为幼虫生长提供了潮湿安全的空间。幼虫食用其父母准备的花蜜和花粉,结茧越冬。
The colorful nests make moist, secure Chambers for the larvae to grow, feast on nectar and pollen laid by its parents, and build a cocoon to wait out the winter.
被寄生的幼虫在冻土层以下越冬,称为冬虫。
Were parasitized larvae overwinter in the frozen soil layer below, known as winter worm.
以老熟幼虫在土中结茧越冬。
Its mature larva makes cocoon under the earth during the winter.
碳氢化合物主要油脂类提取正己烷氯仿或从表面角质层越冬虫瘿苍蝇幼虫。
Hydrocarbons were the major lipid class extracted by hexane or chloroform from the cuticular surface of overwintering gall fly larvae.
通过生命表研究看出:卵、初孵幼虫死亡及越冬后滞育是种群变动的关键因子。
The results of studying for life table indicated the deaths of eggs and primary hatching larvae and diapause of overwintering larvae are key-factors of population change.
幼虫血淋巴内氨基酸中的丙氨酸、胱氨酸和谷氨酸含量分别比越冬初期增加了94.6%、80.2%和19.6%。
The contents of blood's ALA, CYS, GLU of the Over - Wintering Larva were increased 94.6 %, 80.2 %, and 19.6 %, respectively.
在上海一年发生三代,以滞育幼虫在蒜头和枯棉铃组织内越冬。
It has three generations a year in Shanghai and overwinters asa diapaused larva in the head of the garlic and the dead cotton boll.
在上海一年发生三代,以滞育幼虫在蒜头和枯棉铃组织内越冬。
It has three generations a year in Shanghai and overwinters asa diapaused larva in the head of the garlic and the dead cotton boll.
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