The common insects in vegetable fields are Pieris rapae, red spider, aphid and whitefly. During the maintenance period, if you want to kill bugs in vegetable fields, you can spray drugs on vegetables. Use calcium superphosphate, omethoate, acetamiprid, pirimicarb or imidacloprid to spray 1 time on vegetables within 7 ~ 10 days, and spray for 2 ~ 3 times continuously to eliminate pests.

If there are few insects in the vegetable field and they are in the larval stage, you can prepare your own insecticidal liquid to kill insects. In the process of pest control, vinegar, washing powder water, soapy water or cigarette end water can be prepared. Spray the prepared solution on vegetables and plants. Generally, it can be sprayed 1 time in 5 ~ 7 days, and pests in vegetable fields can be eliminated after 2 ~ 3 times.

If there are not many insects in vegetable fields, they can be captured and protected artificially. Manually remove Pieris rapae or red spider from vegetables, and spray an appropriate amount of disinfectant on vegetables after removal. In the later stage of maintenance, it is necessary to do a good job of protection and build insect-proof nets for vegetable fields to avoid insect damage to vegetables.

Main vegetable pests and applicable pesticide varieties:

1, Plutella xylostella, Pieris rapae and other pest crops: cruciferous vegetables. Applicable pesticides: Cai Xi, Abachongjing, Regent, Lingwei Anda, Avermectin, Miman and Qianchongke.

2. Noctuidae crops: leafy vegetables, sweet potatoes, taro, etc. Applicable pesticides: Oxfam, Mott, Chuchu, Hexuron, Cyclophosphamide, Poisonous Chlorine, Qiangsha and Suling.

3. Occurrence crops of aphids and whiteflies: various vegetables. Applicable pesticides: Aketai, imidacloprid, chlorpyrifos, quick killing, aphid cleaning, aphid attack and insect cleaning.

4. Lepidoptera crops: cruciferous vegetables. Applicable pesticides: Amar, Regent, Yi Shi, Jiahaoqing.