After the quality of the radish has deteriorated, the roots of the radish have been deformed, with roots, roots, black hearts, and hollows appearing. The appearance of the goods is poor, and some of them have taste and taste, which seriously affect the value of the goods.
Radish malformation causes
1. The cracked root radish is caused by the rain after the soil is dry, the radish quickly absorbs a large amount of water, and there are also small cracks caused by nematode damage.
2. The rough radish is caused by the lack of boron in the soil. Less soil moisture, more fertilizer, more calcium and other factors will hinder the absorption of boron. When there is a lot of rain, the boron in the acidic soil is easy to lose and lead to boron deficiency, making the radish root surface rough and not smooth.
3. Reticulum radish is due to radish 30 days after sowing, into the expansion period after the encounter high temperature and dry weather, nitrogen deficiency appears.
4. Malformed root is the early stage of radish development, the main root growth point is damaged or obstructed, resulting in lateral root hypertrophy, meat root easily bifurcate or form various types of deformities. Wherever there is a large amount of rainwater or excessive irrigation, the application of unconsumed organic fertilizer or uneven application, the soil plough layer is too shallow, the hazard of underground pests, etc. are easy to form deformed roots.
5. Hollow radish is because the underground part develops faster than the aboveground part, causing insufficient supply of nutrients. Nutrients in the central part of the cell are transported to the surrounding area and hollow.
6. bitter radish in the process of growth and development, when the weather is hot or the application of nitrogen fertilizer and phosphorus and potassium fertilizer is insufficient, the meaty roots tend to produce bitter taste. When the weather is hot, drought or organic fertilizer is insufficient, it is easy to make radish bitter.
Precaution
1. Use fine varieties. In general, the shallower varieties that are buried in soil are less prone to malformed roots; those that contain less water and those that are dense in quality are less prone to cracking; the varieties of white or white husks are lighter in taste and bitter.
2. Lot selection. Choose a deep land and deep plowing.
3. Reapply organic fertilizer. The decomposed manure and livestock manure 1500-2000 kg is used as base fertilizer. Appropriate application of phosphorus and potassium fertilizer, radish from the "strapless" or "dark white", to be followed by the application of plant-based potassium-based organic fertilizer, combined with soil. To prevent the single application of nitrogenous fertilizer, hollow plots will be produced year after year, and 0.5 to 1 kg of boric acid or borax will be applied per mu and sprayed with 0.2% to 0.5% boric acid or borax solution for 3 to 4 days during the straightening period. Spray 1 time, spray 3 to 4 times. It is forbidden to apply urea lately. If urea is applied after the radish enlargement period, the radish is not resistant to storage and transportation, and it will become rotten and taste will become bitter.
4. Reasonably water. Prevent dryness, dampness or excessive dryness and dampness, and do a good job of drought prevention in the later period. After the “Lubai†period, in addition to increasing fertilization, the radish should also keep the soil moist. If it is a drought at this time, it will seriously affect the yield, and it will make the radish hot and have a bad taste.
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