Deep ploughing and improvement of soil: The soil quality of the new vegetable plots is generally poor. The tillage layer is only about 15 cm. It is changed to vegetable soil. Due to the increase in the number of planting pods and the consumption of nutrients, the cultivating layer should be deepened gradually to improve its physical properties. Deep plowing time can be arranged in the summer and autumn when the vegetables are out of the garden, each deep-dip twice, so that the cultivation layer of 25 to 40 cm.
Addition of organic fertilizer: To improve the soil structure, it is necessary to have substances that can stabilize the structure, such as modifiers, urban organic waste, and organic fertilizers. The application of organic fertilizer can not only supply the needs of vegetables for nitrogen, phosphorus and potassium, but also promote the formation of soil aggregate structure, improve the ability to retain water and fertilizer, and increase the buffer capacity of the soil. It is a material guarantee for fertilizing new vegetable fields. Should be given great attention.
Planting legume green manure: The legume green manure fixes the nitrogen in the atmosphere. After picking up the edible part of the legume, the returning of straw, especially the fresh stems and leaves of peas, broad beans, etc., can increase soil organic matter and nitrogen content.
Rational rotation: Continuous cropping of vegetables can lead to soil acidification, salinization, and disease spread. In the grain reform area, special emphasis should be placed on rational rotation, making use of differences in the absorption of different types of vegetables, slowing down the excessive consumption of certain nutrients, and avoiding or alleviating the above-mentioned problems, so as to give full play to the potential of new vegetable fields. If some mustard and peas are arranged in the rotation, they can absorb phosphorus and potassium that cannot be used by ordinary vegetables, and 14% to 34% of them are re-used in the soil in the available state to improve phosphorus and potassium nutrition for the next pods of vegetables. situation. There are a variety of rotations, but one-quarter legumes should be arranged in the rotation.
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