华宇娱乐

华宇娱乐平台

华宇娱乐登录

sitemap

网站地图

行业动态

利用赤眼蜂防治玉米螟技术

来源:华宇娱乐添加时间:2018-11-22 22:56:41 点击:

玉米螟幼虫吃玉米的每一部分,影响玉米的生长发育。特别是在开花期,玉米螟幼虫会咬掉雄蕊,导致授粉失败,直接导致玉米产量的下降。

利用赤眼蜂防治玉米螟技术

虽然喷施杀虫剂可有效防治玉米螟的发生和危害,但全年大量使用杀虫剂会导致玉米螟抗性逐年增加,不仅影响防治效果,而且影响曲库质量。玉米产品的安全性和安全性。

利用赤眼蜂防治玉米螟技术

为了寻找有效的防治玉米螟的绿色技术,长期以来,农业科学家们观察到,天然赤眼蜂是玉米螟的天敌,利用赤眼蜂寄主玉米螟具有良好的防治效果。但长期以来,赤眼蜂人工育种技术还不成熟,因此利用赤眼蜂防治玉米螟的技术尚未得到广泛应用。With the maturity of artificial breeding technology of Trichogramma spp. in recent years, the control of corn borer by releasing Trichogramma spp. artificially bred on a large scale in China has achieved good control effect, and has a green environmental protection and long-term control effect.

利用赤眼蜂防治玉米螟技术

赤眼蜂防治赤眼蜂的关键点

(1)赤眼蜂释放时间:应与玉米螟产卵期对应。Generally, Trichogramma is released in the field at the beginning of the growth period of corn horn, once a week, three times in a row.

(2)养蜂数量:每只蜜蜂1万只。

(3)蜜蜂释放法:每亩建立五个释放点。The upper and middle leaves of a maize plant were selected at the bee releasing point, and bees were stuck on the main veins on the back of the leaves.

(4)注意事项:

第一,准确把握蜂卵发育的进程。

第二,不要把赤眼蜂和杀虫剂和化肥混为一谈,这样杀虫剂和肥料会杀死赤眼蜂。

三。防止阳光直射卡,避免直接洗涤雨水。

(4)如果有小雨,蜜蜂可以继续释放。If there is a heavy rain, bee sticks will be spread out in the shade and darkness, and bees will be released immediately after the rain.

These are the control techniques of Trichogramma spp. against Corn borer, which can not only reduce the use of pesticides, but also achieve the control effect, produce green and pollution-free corn, and improve the efficiency of corn planting.