Root mustard fertilization technology knowledge

1. The use of basal mustard is preferred because it must be rich in organic matter. Therefore, a sufficient amount of organic fertilizer must be applied before site preparation. Generally, farmyard manure or piled-up municipal waste can be used, and then plant ash and superphosphate can be added. The specific amount, depending on the soil fertility, generally 3,500 to 4,000 kilograms per 667 square meters of farmyard manure, 150 kilograms of plant ash, 25 kilograms of superphosphate, spread all over the ground, and then ploughed into the soil, plough depth of 40 to 50 cm , for peace.

2. The application of topdressing may be performed 5 times depending on the specific conditions during the growth and development of live rhizome. When the cotyledons of the seedlings were unfolded, the top dressing was performed for the first time, and 500 kg of the diluted manure was applied at a rate of 1:7 to 667 square meters per 667 square meters. After the first time of seedlings, the second time after the middle tillage and weeding, the second fertilizer was applied, and the excrement water with a ratio of 1:5 applied 800 kg per 667 square meters. After the seedlings are settled, the plants grow rapidly and require sufficient fertilizer and water. A third application of fertilizer can be carried out, applying 10 to 15 kg of ammonium sulfate per 667 square meters. Into the rosette period, in order to promote the meat root swelling, you can recover the fourth fertilizer, 10 kg of urea per 667 square meters, 4 kg of potassium sulfate. When entering the flourishing root mass, adding a fifth fertilizer, it can accelerate root enlargement of meat and increase yield. This time, the nitrogen, phosphorus, and potassium compound fertilizer applied 15 to 20 kg per 667 square meters. When applying topdressing, apply early and apply phosphorus and potash fertilizers. If the topdressing is too late and the amount of nitrogen is too high, it will cause overgrowth of the shoots and affect the root swelling of the flesh.

3. The application of foliar fertilizer in the growth process of rhizome need more boron, enter the seedling stage, can be sprayed with 0.1% to 0.25% of borax or boric acid. In the early stage of fertility, 0.02% to 0.05% ammonium molybdate aqueous solution can be sprayed. After bare shoulder, 2% of superphosphate is sprayed once a week on the leaves, which has a significant effect on yield increase.

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