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冬季,花木害虫都以各种方式进入冬眠。此时害虫虽不再危害花木,但仍需做好预防工作。因越冬害虫基数对来年的虫害发生影响很大。抓住冬季有利时机进行除虫,可以达到事半功倍的效果。1.清洁园地。冬季结合清园,集中处理残茬老叶,去除枯枝、落叶、粗皮和杂草,以消除害虫的越冬场所。2.人工摘除。很多越冬的卵蛹、保护物是暴露在外的,可以结合修剪人工去除。如剌蛾的冬茧、大蓑蛾的虫囊、剌瘤蛾的瘤状物和天幕毛虫的卵块等。3.翻盆换土。部分虫态如尺蛾的蛹、蚱蜢的卵、蓟马的成虫等是在土中越冬的,冬季翻盆土及盆周围土壤或换新土,可以把害虫翻到地面上冻死、干死,或被鸟和其它天敌吃掉。4.药剂防治。若环境适宜(特别在温室中),花木仍会遭受某些害虫的危害。可使用2.5%敌杀死、20%灭扫利2000-3000
In winter, flowers and pests enter hibernation in various ways. At this moment pests no longer endanger landscaping, but still need to do prevention work. Due to overwintering insect pest base on the impact of pests in the coming year a great impact. Seize the favorable opportunity of winter pest, you can achieve a multiplier effect. 1. Clean the garden. In combination with Qingyuan in winter, it will focus on dealing with the old leaves of stubble, removing dead branches, deciduous leaves, bark and weeds to eliminate the overwintering places of pests. 2. Artificial removal. A lot of winter pupae, the protection is exposed, can be combined with manicure removal. Such as the winter cocoon moths, large moths worm capsule, tumor nocturnal moths and cents caterpillars eggs and so on. 3. Turn the basin for soil. Some insects such as moth pupa, grasshopper eggs, adult thrips and other overwintering in the soil, the winter overturning soil and pots around the soil or change the soil, pests can be turned to the ground on the freeze-dried, dried to death, Or eaten by birds and other natural enemies. 4. Pharmacy control. If the environment is suitable (especially in greenhouses), flowers and trees will still be endangered by some pests. Can use 2.5% of the enemy to kill, 20% off sweeping 2000-3000