The call of Ma Lianghong, from Laiji County, Zhengzhou County, Zhengzhou, said: After the occurrence of divergence or rooting of radish, the value of the goods has been greatly reduced. Why does this happen? How to prevent it? Answer: There are two lateral roots on the root of radish. Under normal cultivation conditions, the lateral roots will not expand. However, under special conditions, the lateral roots will expand and two or more tillers will occur, thus forming a root or a root. Soil: If stones are mixed with hard objects such as bricks and tiles or mixed with plastic film, glass and other waste fertilizers, the fleshy roots will be stretched when they reach the above substances in the elongation process, causing lateral root enlargement. Forming a childbirth or bending. Radish root swelling requires good ventilation and high oxygen content. In the later stage of fleshy root enlargement, if the conditions of soil ventilation are good, the lateral roots enlarge and form "beard root". On the contrary, if the soil is compacted, the tillage layer is too shallow, and the soil texture is heavy, the downward growth of the fleshy roots is hindered, causing bending or deformity. In general, long-distance varieties have a higher probability of producing this root than shorter varieties. Fertilization: When a large amount of unfermented compost, livestock manure and other organic fertilizer or topdressing urea, ammonium bicarbonate and other fertilizers are used in high concentrations in the radish field, the tip of the radish will experience fermented compost and high concentrations of livestock waste. Or chemical fertilizers tend to die, break, or inhibit growth. In this case, the lateral roots expand to form roots or curved roots. In addition, excessive application of nitrogen fertilizers during root enlargement of the fleshy leaves results in luxuriant leafy foliage. It also tends to cause enlargement of the lateral roots or bending of the main root to form roots and roots. Temperature: Spring radish sowing date is usually from November to April of the following year. Temperature and ground temperature are low in winter and spring seasons, especially when the tillage layer is less than 15 cm, it is difficult to artificially increase the ground temperature. In case of continuous irrigation, the porosity of the soil is reduced and the soil layer is compacted. , easy to form a hard layer of soil, resulting in broken radish broken after the main root of the bad, affecting the lower middle fleshy root enlargement, the formation of deformed roots. Therefore, one month before sowing, the shed film should be warmed up and the cultivating layer should be deep-lifted. After the sowing, sufficient water should be poured to cover the mulch. This can solve the contradiction between water and temperature and ensure the normal growth of spring radish. In addition, mismanagement or pest damage can also cause dislocation or rooting. For some varieties of long fleshy roots, it is more prone to birthing and bending than to dense plants. (Yanshan County Agriculture Bureau Li Bingyi)
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