Corn thrips are the main pests in the corn seedling stage. Adults or nymphs suck the young leaf juice in the corn heart and destroy the growth point of the corn. The corn leaves are yellow and chlorotic, and the corn leaves are curled into cows. The shortening of the tail-shaped deformity is shortened, which seriously affects the normal growth of corn.
Its body size is small, the activity is hidden, it is not easy to be discovered, and it is easy to miss the control period, which will cause the corn field to be aggravated.
If the measures are not taken in time, the new core leaves will rot:
In order to control the occurrence of corn thrips and ensure that the corn seedlings are full of seedlings, all localities should pay close attention to the dynamics of the thrips in the corn fields and timely organize scientific control.
The little Hummer is very dangerous, and it is more effective to prevent it:
First, agricultural measures: 1, timely removal of weeds in the field, reducing the source of insects. 2. When combining the seedlings in the field and fixing the seedlings, remove the seedlings and take out the destruction outside the field to reduce the spread of the thrips. 3. For corn seedlings with twisted heart leaves, an awl can be used to plunge from the base of the whip leaves, open from the middle, and let the heart leaves return to normal growth. 4, strengthen management, timely irrigation and fertilization, to promote the early growth of corn seedlings, can effectively reduce the damage of thrips; at the same time can also change the microclimate of the corn field, so that its humidity is increased, which is not conducive to the growth of thrips, especially dry Early attention should be paid to the lack of fertilizer.
Second, the chemical control: Due to the serious occurrence of thrips in recent years, the conventional drugs imidacloprid, acetamiprid have produced significant resistance, resulting in low control. A large number of tests have shown that thiamethoxam, nitenpyram, pymetrozine and ethyl spinosyn are less resistant to thrips and can obtain relatively high control effects. Specifically, it is possible to use the grain produced by the joint production of Benelux or Fumei Shi, which can be used in time to prevent and control the use of products such as Ai Shishi of Dow AgroSciences. At the same time, pests such as Laodelphax striatellus and aphids can be treated. At the same time, according to the habit of the night and night, try to prevent in the morning or evening.
Sub-Control Box,Integration Led Dimmer,Led Dimmer Artnet Controller,Mini Lighting Led Dimmer
Shen zhen SH LED Technology Co.,Ltd , https://www.pixellightsolutions.com