First, do not apply too much nitrogen fertilizer, promote the use of organic fertilizer and less fertilizer, the application of chemical fertilizers, should be nitrogen, phosphorus, potassium and weight, according to the ratio of the needs of the crop.
Second, handle the relationship between pest control, pollution prevention and quality assurance. 1. Pay attention to the selection of pesticides and prohibit the use of pesticides that are highly toxic, highly toxic, highly residue, or have "triple causes" (carcinogenic, teratogenic, mutagenic). 2. Strict use methods, if the production must be allowed to use some of the organic synthetic chemical pesticides (low-toxic pesticides and individual poisoning pesticides), but must strictly control the amount of pesticides, the number of uses and the last application of pesticides, from the time interval of harvest In the period, each organic synthetic pesticide is allowed to be used only once in the growing period of a crop. 3. Priority should be given to agricultural disease prevention and control. It is necessary to proceed from the entire ecosystem of vegetables, such as diseases and insect pests, and comprehensively apply various prevention and control measures. Disease-resistant, insect-resistant varieties, the use of lights, color traps to kill pests, machinery to capture pests, mechanical and artificial weeding and other measures, not only to ensure high yield and high quality vegetables, but also does not cause the pollution of vegetables.
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