Hybrid watermelon needs high water and high fat. According to test calculations, the production of 1,000 kilograms of watermelon requires 5 kilograms of nitrogen, 2 kilograms of phosphorus pentoxide, and 5 kilograms of potassium oxide. If 3,000 kg of hybrid watermelons are planted on moderately fertile soil, 15 kg of nitrogen, 6 kg of phosphorus pentoxide, and 15 kg of potassium oxide are required. To do the fertilization:
1, Shi foot base fertilizer. Mu Shi quality organic fertilizer 2000 kg, 75-100 kg cake fat. With 50 kg of special fertilizer for watermelon or 50 kg of potassium sulfate compound fertilizer. If there is no compound fertilizer, 10 kg of urea, 30 kg of superphosphate and 10 kg of potassium sulfate can be used. Organic fertilizer and cake fertilizer should be applied in layered or full-layered preparations during soil preparation. Fertilizers should be mixed with a small amount of organic fertilizers to spread the furrows or apply acupuncture points when transplanting watermelons after soil preparation.
2, pay attention to long melon fertilizer. Application of long melon fertilizer can promote early melon, knot big melon, but according to the amount of fertility and seedlings topdressing. In the fruit setting period, when the watermelon enlarges to 0.25 kg, urea 4-5 kg ​​is applied per acre.
3, do a good job spray fertilizer. The vine grows long and the leaf area is large. Using foliar spray fertilizer can increase fertilizer utilization. During the transition from the watermelon to the reproductive growth stage, the demand for phosphorus and potassium is greatly increased. To prevent premature aging, 0.2%-0.5% of potassium dihydrogen phosphate, 0.1% boron and 0.5% ferrous sulfate and other trace element aqueous solutions can be used per mu. Kilograms of foliar spray prevent premature aging, enhance disease resistance, and improve the quality of watermelon.
For the most common waxy and sweet corn on the market, waxy corn has a higher nutrient content than regular corn, containing 70-75% starch (and almost all straight-chain starch), more than 10% protein, 4-5% fat and 2% multivitamins, with more grains, VA, VB1 and VB2 in protein than rice, with the highest fat and VB2 content. Yellow maize also contains carotenoids, such as rice and wheat. The molecular weight of waxy maize starch is more than 10 times smaller than that of ordinary maize, and the starch makes glutinous rice sticky and soft, softer than ordinary hard maize. It is more than 20% more digestible to eat than regular maize and it is suitable for people with less than perfect teeth. At the same time, it is not suitable for diabetics because of the very high content of straight-chain starch (a polysaccharide).
Waxy maize is also known as sticky maize. The grain has coarse, waxy endosperm, similar to shiny, glassy (clear) grains such as hard and dent maize. Its chemical and physical characteristics are controlled by a recessive gene, which is located on chromosome 9. 100% of the starch in the endosperm is straight-chain starch.
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