1, the pursuit of quick effect. Many vegetable farmers always prefer to choose quick-impact when they choose pesticides and fertilizers. The reason is that fast-acting pesticides and chemical fertilizers show effects soon after they are used. Although some pesticides and fertilizers are effective, they are only effective in the later stages due to their slow performance. They are not recognized by the farmers. For example, some leaf fertilizers containing hormones or nitrogen-based fertilizers can be effective in a few days after spraying. However, this rapid growth is only a matter of leggy, which is detrimental to the whole growth and development of the plant. When using insecticides, they seek quick results and hope to kill pests immediately after spraying. However, some biological pesticides such as bt or avermectin insecticides are not easy to show because they only kill eggs or inhibit insects' molting or are slow to take effect. They are often not recognized by vegetable farmers. The most serious consequence of the pursuit of quick-effect by vegetable farmers is that the use of highly toxic, highly toxic, and high-residue pesticides persists in some places, and the pesticide residues produced in the products are excessive. 2, blindly pursue new differences. At present, there are many kinds of pesticides and fertilizers on the market, among which there are some pesticides with incomplete "three certificates" and fertilizers produced without certificates. Some farmers prefer to use newer pesticides and fertilizers. As an example of pesticides, although the use of new pesticides can prevent some diseases and insect pests from appearing resistant to insecticides, many pesticides are mainly based on compounding agents. When they are used, the amount of pesticides will increase, causing phytotoxicity. At the same time, some pesticides and fertilizer products have not been promoted, their effects are not well understood, and they are prone to problems. 3, too much believe in the efficacy of certain fertilizers, pesticides. Many fertilizer and pesticide descriptions have scope of application. When purchasing pesticides and fertilizers, they will be bought and used as long as they have a large number of labels. If any pesticide indicates that it can cure diseases such as fungi, bacteria, viruses, etc., it will be purchased as a good pesticide. 4, over-application. Many vegetable farmers over-application of fertilizers, pesticides, the use of pesticides when the amount of commonly used drugs is several times or even more than ten times, often caused by phytotoxicity. The application of organic fertilizers and chemical fertilizers is several times the application amount, and often causes damage to the crops, which causes the crops to burn roots and affect the yield. Simultaneously, excessive application of one or more chemical fertilizers also causes soil salinization. 5, improper use. When applying fertilizers, choose suitable methods, such as spraying or fertilizing fertilizers at different growth stages, and whether the organic fertilizers are adequately decomposed. If it is not applied in an appropriate way, there will be fertilizer damage. If no chicken manure has been applied, harmful gases can occur and harmful bacteria in the faeces can be brought into the shed. 6, can not prescribe the right medicine, reasonable fertilization. This is a common problem in the current vegetable production. Many farmers are unable to diagnose correctly because of lack of necessary plant protection knowledge and fertilizer knowledge. They are blindly using drugs and using fertilizers. Especially when vegetables lack a certain kind of nutrition, the wrong application of another fertilizer can not only fail to treat the disease, but it may aggravate the disease. 7, a variety of pesticides mixed use. A major problem that currently exists is that many vegetable farmers use several fungicides with 5 to 8 combinations of trace fertilizers, insecticides, and viricides, which not only affect the efficacy but also cause phytotoxicity and affect crop growth. JIANGMEN EASY TECHNOLOGY CO.,LTD , https://www.easylife-tech.com