In the process of vegetable planting, vegetable farmers often resort to rotating measures to overcome continuous cropping obstacles and reduce the occurrence of diseases. The following four principles should be followed when arranging vegetable rotations:
According to the different principles of nutrient requirements for vegetables, cultivars are cultivating leaf vegetables that require more N fertilizers, solanaceous fruits that require more P fertilizer, and root vegetables that need more K fertilizers. Fruits are replaced with shallow-rooted cabbage, cabbage, cucumber, onion and garlic vegetables, so that nutrients in different layers of the soil can be fully utilized. Generally, leaf vegetables with more nitrogenous fertilizers need to be arranged for the more solanaceous vegetables that require more phosphorus.
According to the principle of alleviating soil acidity and balancing soil fertility, eucalypts such as potato and cabbage will increase soil acidity, and corn and pumpkin will reduce soil acidity. For example, placing acid-sensitive onions on corn and pumpkin can help reduce soil acidity. Get higher yields and benefits. Planting legumes can increase soil organic matter, improve soil structure, and increase soil fertility. The long-term cultivation of some leafy vegetables that require more nitrogen fertilizer will cause the soil nutrients to lose balance and lead to deficiency of vegetables, thus reducing the yield and quality. For example, the long-growing and short-growing vegetables, the ones that need more fertilizer and the ones that need less fertilizer, will be exchanged for planting.
According to the principles conducive to reducing pests and diseases, such as cucumber downy mildew, wilt disease, powdery mildew, maggots, etc., have the ability to infect and transmit diseases to melons and vegetables, and it is even more unfavorable to make cucumbers. If other vegetables are used, they can be harvested. To reduce or eliminate the effect of pests and diseases. Such as onion and garlic after planting cabbage, can significantly reduce the soft rot. Grain and vegetable crop rotation, paddy-upland rotation, and control of soil infectious diseases are more effective.
According to the strength of the vegetables on the inhibition of weeds, the arrangement is as follows: The vegetables with strong weed inhibitory effect are arranged, and the vegetables with poor weed control effect can be arranged in the lower jaw. Some vegetables that grow rapidly or have high cultivation density, long growth period, and large leaf coverage on the ground, such as melons, cabbages, beans, potatoes, etc., have a significant inhibitory effect on weeds; carrots, celery, etc. Slow or leafy vegetables are prone to weed growth. When these different types of vegetables are rotated and cultivated, they can be used to reduce grass damage, increase production, and increase income.
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