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How to plant a good burst corn
Popcorn is a specialty corn that is specially used to make popcorn foods. With unique burst performance, it can be popped to popcorn under normal pressure with heating and baking. The expansion coefficient is 25-45 times. The ideal burst effect can be obtained by using ordinary heating containers such as wok and ordinary heat sources. It is very convenient to eat. Burst corn can provide 67% of the protein contained in beef of equal weight. The content of protein, amino acid, phosphorus, iron, calcium and vitamins are quite abundant. 1. Variety selection According to the length of the local frost-free period, choose the moderate growth period, resistance to large spot disease, head smut, and resistance to premature aging. 2. The requirements for selecting and isolating popped corn on the soil are relatively strict, and soils with medium or more soil fertility should not be used. The raw material production field should be separated from the normal corn field by more than 20 meters. 3, fertilization and application of full-body fertilizer, mainly farmyard manure, apply fertilizer 3000-4000 kg per 667 square meters. Soil organic matter in about 1.5% of the land, the next species with the species applied 10-15 kg of ammonium phosphate or ammonium sulfate 10 kg plus 30 kg of superphosphate. Big bell mouth topdressing nitrogen fertilizer, apply urea 20-25 kg or ammonium sulfate 45-55 kg. In recent years, some plots have been using chemical fertilizers for a long period of time. A serious shortage of potassium in the soil will affect the normal development of the plants, especially the slow development of yellow leaves in the seedling stage. Burst corn is more sensitive to potassium than normal corn and should be given enough potassium. Generally, potassium sulfate is applied at 10-15 kg per 667 square meters. 4, sowing and density burst corn sowing time and the same as ordinary corn. Because of its small grains and weak soil strength, it requires high quality sowing. Should do a good step on the grid and on the grid, cover soil 3-4 cm, generally taken on the ridge ditching equidistant on-demand, sowing 3 tablets per pod, two pods in the middle of the application of fertilizer, seed fertilizer can not contact with the seed in order to avoid burning. According to the planting methods and soil fertility and species to take different densities. Generally 4000-4500 plants per 667 square meters is appropriate. The number of lean plants is not enough to reduce the production, and the density is too small and empty stalks are produced when the density is too dense. It should be emphasized that burst corn does not allow field crops and replanting to prevent the emergence of three types of seedlings. Because the maturity of the three types of seedlings and normal seedlings is inconsistent, their quality will be degraded, and the burst rate and expansion coefficient will be affected. 5. Disease prevention and control Pests and diseases prevention and control of popcorn are focused on the underground pests at the seedling stage, corn borers of the first generation and corn borers of the second generation. Poor control of underground pests will cause three types of seedlings and lack of seedlings, affecting yield and quality. Prevention of corn borer is the key to guaranteeing the quality of popcorn, and it is a key link in the production of popcorn. It must not be careless.