论文部分内容阅读
柑桔锈螨(亦称锈壁虱)是柑桔全年生长中为害期最长的虫害之一。根据我省观察,一年有15～16代,3～4月开始活动,一般在5月出现第一次虫害高峰,6月中旬～11月出现第二次持续高峰。以往我省对这种虫害多用0.1°、0.2°石硫合剂防治,对成、若虫杀伤率可达100％。但是石硫合剂不能杀卵,且无残效作用,需要在喷药后隔5～7天再喷一次,才能杀伤新孵的若虫,达到彻底防治的目的。因此,在大面积防治时,劳力和时间很难安排。同时,用0.1°～0.2°石硫合剂在秋季高温时喷射,会加剧日灼病的发生。近几年来,各地用代森锌防治锈螨,收到一定效果。据我站观察,在秋季高温时用80％代森锌500～600倍喷
Citrus rust mite (also known as rust tick) Citrus annual growth of one of the longest pest damage. According to the observation of our province, there are 15 to 16 generations a year, and activities begin from March to April. The first pest peak usually occurs in May and the second consecutive peak occurs in mid-June to November. In the past, we used this insect more 0.1 °, 0.2 ° stone sulfur mixture control, into, nymph kill rate of up to 100%. However, the stone sulfur mixture can not kill eggs, and no residual effect, you need to spray spray again after 5 to 7 days to kill the newly hatched nymphs, to achieve the goal of complete prevention and treatment. Therefore, labor and time are difficult to arrange in large-scale prevention and control. At the same time, with 0.1 ° ~ 0.2 ° stone sulfur mixture spray in high temperature in autumn, will aggravate the occurrence of sunburn. In recent years, around with rust zinc rust prevention mites, received a certain effect. According to my observations, in the autumn high temperature with 80% of the zinc injection of 500 to 600 times spray