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Vegetable field rotation
1, make full use of soil nutrients. Different vegetables have different nutrient absorption. More vegetables with more nitrogen, more phosphorus, and more potassium are required, or deep-rooted vegetables can be rotated with shallow-rooted vegetables to make full use of nutrients at all levels in the soil. Generally, leafy vegetables with more nitrogen need more solanaceous fruits with more phosphorus; fat cucumbers, celery, and spinach are the best choices; tomato and eggplant with the best response to organic fertilizers , pepper and so on. 2, pay attention to the prevention and control of pests and diseases. The rational rotation of different vegetables for planting can cause the pathogen to lose its host or change its living environment, so as to reduce or eliminate it. Such as cucumber wilt disease, aphids, etc., can also infect other melon vegetables, if you change the non-cucurbit vegetables, will reduce or eliminate the effect of pests. Another example is the onion and garlic harvest after the kind of cabbage, can make the Chinese cabbage soft rot significantly reduced. Such as the implementation of grain and vegetable crop rotation, crop rotation, more effective in controlling soil infectious diseases. 3. Pay attention to the influence of various vegetables on soil pH and fertility. Potatoes, kale, etc. will increase soil acidity, while corn, pumpkin, etc. will reduce soil acidity. Therefore, high-yield can be achieved by using acid-sensitive onions as a postharvest for corn and pumpkin. The leguminous vegetables can increase soil organic matter content and increase soil fertility. Long-term planting of leafy vegetables that require more nitrogen will make the nutrients in the soil unbalanced. Therefore, the growth period and growth period should be short and the fertilizer needs to be increased. It is suitable for planting with less-needed vegetables. 4, pay attention to the inhibition of weeds before. Some vegetables that grow rapidly or have high cultivation density, long growth period, and large leaf-to-ground coverage, such as melons, cabbages, beans, and potatoes, have a significant inhibitory effect on weeds. While carrots, celery, etc. have slow growth and small leafy vegetables, they are easy to breed weeds. The rotation of these vegetables can significantly reduce grass damage.