White radish planting fertilizer management technology
Radish is not drought-tolerant, and the water shortage in the seedling stage is easy to cause the plant to be infected with virus disease. When the water is lacking in the late growth stage, the radish fleshy root grows thin, the skin is thick and hard, the spicy taste is heavy, and the hollow is not enough, which leads to the plant. The leaves are long and the fleshy roots are poorly developed. Therefore, according to the amount of precipitation, the level of the groundwater level and other conditions to determine the number of watering and the amount of watering each time, but also according to the different stages of growth and development of radish.
Seedlings should be poured less frequently, so as to prevent the plants from stagnating due to lack of water and causing viral diseases. Before the "breaking belly", seedlings should be planted to promote the growth of roots deep into the soil layer. During the vigorous growth of the leaves, the water needs to be large, and water should be watered to prevent the leaves from growing. The fleshy roots should be fully and uniformly filled with water to prevent cracking; in the later stage of growth, water should be properly watered to prevent hollowness. Watering should be stopped 5 to 7 days before harvest to improve the quality and storage capacity of the fleshy roots.
In addition, the growth period of white radish is not long. In the land with high soil fertility level and sufficient base fertilizer, it is only necessary to carry out two top dressings during the whole growth period. The first time is carried out after the end of the seedling stage, combined with watering every 667m2. Apply urea or ammonium sulphate 10~20kg; the second time in the growth stage of fleshy roots, apply 15~20kg of compound fertilizer to promote the expansion of fleshy roots. In plots with insufficient base fertilizer and poor fertility, appropriate topdressing should be applied 1 or 2 times. In the period of rapid expansion of fleshy roots, it is also possible to apply 1-2 kg of boron fertilizer per 667 m2 in combination with pest control.
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