1. Rationally rotate planting vegetables and make full use of soil nutrients. Different vegetables have different nutrient absorption. The rotation of vegetables with more nitrogen, more phosphorus, and more potassium, or the rotation of deep-rooted vegetables with shallow-rooted vegetables can make full use of the nutrients in the soil.
2, pay attention to the prevention and control of pests and diseases. The rational rotation of different vegetables for planting can cause pathogens to lose their parasitic or change their living environment so as to achieve the purpose of reduction or elimination. Such as cucumber wilt, worms, etc., can also infect other melon vegetables. If the non-cucurbit vegetable is changed, it will reduce or eliminate the pest. 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. Slow-growing carrots, celery, and small vegetables make it easy to grow weeds. The rotation of these vegetables can significantly reduce grass damage.
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