How to control root-knot nematodes?

How to control root knot nematode? What should be paid attention to in root knot nematode control? Please also understand the netizens to help introduce Root-knot nematodes harm a wide range, such as melon, eggplant, beans and radish, carrot, lettuce, cabbage and other more than 30 kinds of vegetables will be harmed by root-knot nematodes, so the cultivation network sorted out the prevention and control methods and precautions of root-knot nematodes, listed in detail below for netizens to refer to. 1. Prevention is the main and treatment is the auxiliary: There are many netizens in the process of pest control, just blindly want to know what kind of medicine can cure such diseases or insects, the focus is still on how to cure. This kind of prevention and control viewpoint exists in most vegetable farmers, but they do not think about how to avoid the occurrence of pests and diseases, what kind of farming operations should be done before the occurrence of pests and diseases, cut off the transmission route of pests and diseases, consciously deteriorate the survival and reproduction conditions of pests and diseases, so as to reduce the occurrence of pests and diseases. Especially in the process of nematode control, we should pay more attention to the important role of "prevention" and pay attention to every small agricultural operation link (borrowing seedlings, string shed, rotary tiller farming). 2. Rootknot nematodes cannot be eradicated: Root nematodes can not be completely eliminated, according to the actual planting situation, early prevention, early detection, early treatment, comprehensive use of different control measures, comprehensive control, especially pay attention to comprehensive use of agricultural and physical measures, reduce input costs, combined with chemical control, enhance control effect. It is particularly noteworthy that in the selection process of chemical agents, high-efficiency and low-toxicity pesticides should be selected, such as Jianzhibao (inhibitory line type), nematodes Bike, Kexiandan and other pesticides, avoiding the selection of highly toxic pesticides, and realizing pollution-free and standardization of vegetable cultivation as soon as possible. III. Causes of root knot nematode occurrence: Nematodes can spread through various ways, but in the old vegetable planting areas, the main transmission ways are unreasonable agricultural operation measures (such as shed, seedling borrowing, random discarding of diseased plant residues, application of undecomposed organic fertilizer, excessive use of chemical fertilizer, etc.), which expand the transmission range of nematodes and aggravate the damage degree. IV. Rational use of drugs: Highly toxic nematicides are generally highly toxic and highly residual pesticides, which can cause residual pollution of vegetables and have great impact on human health. They do not meet the requirements of pollution-free production of vegetables, and cause greater losses in the use of highly toxic nematicides. And because of the special environment conditions of nematode survival, the control effect of highly toxic nematicide is not ideal, and the use of highly toxic nematicide is not worth the loss. What are the pesticides, what are the underground pest specific drugs?