What are the management methods for planting radishes in summer?
What management methods are there for planting radishes in summer? Please give an introduction. The following methods can be referred to for managing radish planting in summer: 1. Thinning and final thinning: After the seedlings emerge, carry out the first thinning when the cotyledons unfold; carry out the second thinning after 3-4 true leaves grow; when the seedlings have 5-6 leaves and the radish's fleshy root splits...
What management methods are there for planting radishes in summer? Please give an introduction
The following methods can be referred to for managing radish planting in summer:
1. Thinning and final thinning: After the seedlings emerge, carry out the first thinning when the cotyledons unfold; carry out the second thinning after 3-4 true leaves grow; when the seedlings have 5-6 leaves and the radish's fleshy root splits, begin final thinning, keeping only one healthy seedling per hole.
2. Cultivation and weeding: Along with thinning, carry out shallow then deeper hoeing and cultivation, and at the same time bank the soil from the furrow onto the bed surface to prevent the seedlings from falling over.
3. Timely irrigation: Summer temperatures are high and water evaporates quickly, so watering should be reasonable according to soil moisture and the characteristics of each growth stage of the radish. In the seedling stage, the roots are shallow and water demand is small, so the principle of "water less but often" should be followed; during the peak leaf growth stage, the principle of "moderate irrigation" should be followed, and watering should not be excessive; during the fleshy root swelling stage, the principle of "sufficient and even water supply" should be followed, keeping soil moisture at 70%-80%. Note: Summer radishes should not be watered at noon; watering in the evening is best.
4. Fertilizer application: After final thinning, apply 8-12 kg of urea per mu along with watering to promote leaf growth; in the early stage of fleshy root swelling, that is, after the shoulders are exposed, apply 15-20 kg of urea or ammonium sulfate and 10-15 kg of potassium sulfate per mu with water. In addition, if foliar spraying is carried out 2-3 times in combination with root topdressing during this period, it will effectively promote fleshy root swelling.
5. Pest and disease control: Summer temperatures are high and there are many insect pests, mainly cabbage caterpillars, aphids, diamondback moths, striped flea beetles, etc. Insecticides such as chlorpyrifos, imidacloprid, chlorfluazuron, and BT emulsifiable concentrate can be selected for control; for diseases such as black rot, soft rot, and viral disease, corresponding fungicides such as Xinzhiromycin, Virus K, and Virus Ling can be selected respectively for control.
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