论文部分内容阅读
桑粉虱 Bemisia mylicae Kuwana属同翅目 ,粉虱科 ,在浙江、江苏、四川等桑蚕区普遍发生 ,新疆尚无研究报道。笔者在新疆农科院植保所孟昭金研究员的大力帮助下 ,初步研究了桑粉虱的生物学特性 ,结果如下。1.寄主 :仅见有桑。2 .越冬 :以蛹越冬 ,随桑叶落地 ,极耐严寒 ,在乌鲁木齐 - 2 6℃度条件下大多数蛹仍能羽化。3.产卵 :和田 4月份是羽化期 ,田间除盛夏约一周不见新卵 ,直到落叶以前都可见。4.孵化 :4月中旬开始 ,5月中旬盛孵。初孵若虫很快固着在叶片上危害 ,并失去足和触角。5 .世代 :一年多代 ,世代重迭。仅测得发育起点温度为 6.9℃ ,越冬蛹完成羽化所需有效积温约为 740日·度。桑粉虱的防治应以彻底清扫落叶 ,大力压低越冬虫口基数为主。
Morus albopictus Bemisia mylicae Kuwana belongs to the Homoptera, Whitefly family, in Zhejiang, Jiangsu, Sichuan and other areas generally occur in silkworm, Xinjiang has not been reported. The author of the Xinjiang Academy of Agricultural Sciences, Institute of Plant Protection, Meng Zhaojin researchers with the help of a preliminary study of the biological characteristics of San whitefly, the results are as follows. Host: only see there is mulberry. 2. Overwintering: The pupae overwintering, with mulberry leaves landing, very resistant to cold, most of the pupae can still emerge under the conditions of Urumqi - 26 ℃. 3. Spawning: Wada April is a period of emergence, the field except about a week in mid-summer no new eggs, until the leaves are visible before. 4. Incubation: start in mid-April, mid-May Sheng Sheng hatch. The newly hatched nymphs quickly harden on the leaves and lose their feet and antennae. 5 generations: more than a year, generations overlap. Only measured starting temperature of 6.9 ℃, overwintering pupal eclosion required effective temperature is about 740 days · degrees. Morus albopictus prevention and treatment should be to thoroughly clean the leaves, vigorously suppress the overwintering population base.