The spring sowing cabbage early sowing, fast growth, good quality, short growing period, and rapid market is one of the important varieties to alleviate the off-season spring vegetables. However, the biggest problem with spring sowing cabbage is insect pests. If it is not prevented and controlled in time, lighter ones lead to lower quality and, in severe cases, they lose their value. Production must be based on the law of the occurrence of pests, prevention, and reduce the pests to a minimum. The common pests of spring-sown cabbages include cabbage caterpillars, yellow striped hops, and aphids.
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Usually about 15 days after sowing, there are many winged otters, and more lay eggs of the cabbage worms. It is advisable to carry out the first prevention and treatment; if it is necessary to concurrently cure yellow hops, it can be carried out 10 days before sowing so that the locusts can reproduce. Slow down. The second major control of aphids, the appropriate period of time before harvest 10 days, because this time is the period of rapid growth of aphids began to control the better. However, due to different environmental and climatic conditions, there are differences in field pests. When the pests are mild, they can also be controlled once. The suitable period is about 20 days after sowing.
In addition, due to the increasing temperature during the spring sowing of Chinese cabbage, pest activity is more and more frequent, timely harvest is also one of the important measures to reduce pests.
Author: Hebei Wuji County Agricultural Technology Center 