How to prevent the deterioration of radish quality?

The selection of radish varieties with dense roots and high dry matter content requires the use of new seeds with strong viability and no obsolete seeds. This is very important for improving the quality of radish, as radish seeds are weak in viability and meet soil compaction or soil. There are bricks, stones, agricultural film and other foreign materials to limit the environmental conditions of root growth, it will cause the radish fleshy roots to give birth and bending caused by deformed roots. In addition, the use of dense roots and high dry matter content is also an effective measure to prevent heart failure.

Second, the election, rotation, finishing

Choose deep-growing, loose and fertile soil, and plant the cruciferous vegetables such as cabbage, radish, cabbage, etc. in the soil. Deep plowing, fine soil preparation, avoiding soil compaction, soil loosening, no stones, Bricks and other hard objects, removal of waste film, is not only conducive to the normal expansion of radish meat root, but also can effectively prevent the occurrence of abnormal radish delivery and black rot.

Third, rational fertilization

Scientific fertilization based on growth characteristics is very important to prevent deterioration of radish quality and achieve high quality and high yield. Fertilizer should pay attention to the following points:

1. Organic fertilizer must be thoroughly cooked. If organic fertilizers such as fresh manure, chicken manure and cow dung that have not been fully decomposed are used, one is prone to burning roots and affects seedlings. The other is that during the growth of radish, microorganism activity in the soil is strong and excess oxygen is consumed. Causes dark red radishes and black hearts.

2. Fertilization should be balanced. Fertilization requires balanced nutrients, and topdressing fertilizers should be appropriate. In general, per acre Shi quality decomposed organic fertilizer 6000 ~ 7000 kg, with the use of 10 kg of DAP, potassium sulfate 3 ~ 5 kg as a base fertilizer; top dressing, combined with watering per acre in the seedling stage topdressing 5 kg of urea, Rosette each Mu topdressing urea 8 ~ 10 kg; fleshy root rapid expansion period, topdressing urea 5 ~ 8 kg per mu, 10 ~ 15 kg of diammonium phosphate, potassium sulfate 10 kg. If the temperature is too high, excessive application of nitrogen fertilizer, phosphorus and potassium fertilizers often make the radish bitter. In the production should be reasonable fertilization, increase organic fertilizer and phosphorus and potassium fertilizers, to avoid partial application of nitrogen fertilizer, not only can reduce bitterness, but also can promote the development of straight roots and reduce the radish root quality of spicy.

Fourth, science watering

Scientific watering is particularly important to prevent radish from cracking, pungency, and black and black hearts. To control the germination period, we must keep the soil moist. After sowing, if the soil is dry, we need to water it immediately. When the emergence is 75% or more, we will pour a little water again to ensure the whole seedlings. The water requirement at the seedling stage is small. Water, so as not to cause growth stagnation due to lack of water in seedlings, prevention of virus diseases induced by high temperature and drought, and pay attention to drainage and flood prevention; adequate watering, controlling water, cultivating soil and seedlings in vigorously growing leaves, and vigorously growing roots of fleshy roots Water to prevent cracking; stop watering for 5 to 7 days before harvest to improve quality. It should be noted that the irrigation water used should be flowing clean water or well water, avoiding the use of sewage or pond standing water.