Recently, the author saw in the Zhongba on the edge of the Lijiang River in Gaolou Town, Tongliang District, Chongqing. Some villagers dig radishes and some clean radishes. Whether it is a cylindrical Korean radish or a sand can-type local radish, it is large in size and white in color.
“I planted 400 mu of radish in Zhongba, about 5 tons per mu. The taste is very good. It tastes sweet and tastes very good.†A grower said that the local radish fertilization should be applied in proportion to the proportional application. Solve the problem of poor soil fertility and increase the yield and income of radish. Sandy soil radish is located in the middle dam of the bank of the Minjiang River. It has thousands of acres of sandy soil and is suitable for planting root radish, carrot, sweet potato and other root crops. It is the main area for planting root crops in Tongliang District. “Sand soil is loose and breathable, which is conducive to the rooting of crop roots and the expansion of roots, but the fertility is poor and the ability to keep fertilizer is weak. Therefore, in the sandy soil, radish should pay attention to fertilization, apply more farmyard manure and compound fertilizer. Ensure that the radish is high-yield and excellent in quality.†Gan Yongjun, a cadre of the vegetable production office in Tongliang District, said. According to the introduction of agricultural technicians, the farmer's fertilizer is mainly used to apply farm animal manure such as livestock manure, chicken manure and rabbit manure as the base fertilizer. The average acre is 5000 kg. Before fertilizing, the farmyard manure should be fully decomposed by means of stacking. “Farm fertilizer is a nutrient-complete fertilizer. As a base fertilizer, it can effectively improve the structure of sand, promote microbial activities, improve soil water retention and fertilizer retention capacity. At the same time, it is a late-effect fertilizer, nutrient release is uniform, fertilizer efficiency is good, time is long, and it can last for Crops provide nutrients," said Gan Yongjun. A comprehensive agricultural technician who guarantees fertilizer efficiency said that high-yield should be achieved when planting radishes. In addition to adequate fertilization, it is necessary to ensure comprehensive fertilizer efficiency. Therefore, during the growth of radish, in addition to the application of farmyard manure, compound fertilizer should be applied to provide a comprehensive nutrient supply for radish. The compound fertilizer has high total nutrient content and complete nutrient elements, and the yield increase effect is usually better than that of simple fertilizers such as ammonium bicarbonate and urea. At the same time as the farmer's fertilizer is used as the base fertilizer, compound fertilizer is also applied to each nest. Generally, about 30 kg per mu is applied, and then the soil is covered after fertilization. When the roots of radish begin to expand, 15 kg of NPK compound fertilizer is used as top dressing per acre to supplement nutrients.
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