Fertilization management techniques for high quality and high yield of wax gourd

1. The growth period of base fertilizer wax gourd is long, and the peak period of fertilizer absorption is also long. Great attention should be paid to the application of base fertilizer, which should be based on high-quality organic fertilizer with comprehensive nutrition and long nutrient supply. Wax gourd base fertilizer per mu generally apply high-quality ring fertilizer more than 5000 kg. The application of base fertilizer can be combined with soil preparation, and furrow application can be adopted in some places. Wax gourd base fertilizer application amount, especially organic fertilizer, must be fully mature, so as not to damage the root system. In the northern area, wax gourd fields should be ploughed and dried before winter, ploughed and raked evenly after applying organic fertilizer, fully fermented with cake fertilizer or oil residue as base fertilizer, or mixed with calcium superphosphate. In areas with less base fertilizer, ditch or hole application can be applied; if there is more base fertilizer, it is best to apply half of it and not half of it. two。 Topdressing is also very important for the growth and yield formation of wax gourd. Thin manure water is often used for topdressing in the south, while fully mature high-quality barnyard manure and quick-acting chemical fertilizer are used in the north, which are applied 2 times in the whole growth period. Nitrogen was the main topdressing in the early stage, while nitrogen, phosphorus and potassium compound available fertilizer was the main fertilizer in the middle and later stage. The topdressing period of wax gourd varies with different cultivation methods. Wax gourd is mostly cultivated by direct seeding. When the base fertilizer is sufficient, it is not necessary to apply fertilizer too early for the first time. Generally speaking, after the third true leaf flattened in the southern region, the first topdressing was carried out in the northern region in the period of 5 ~ 6 true leaves. During the vine-drawing period, dilute fertilizer is applied once each in the vine length of about 1 meter and 2 meters, in order to promote the growth of the vine. The fourth topdressing is in the flowering and fruiting period, this fertilization is very important for the growth of wax gourd, generally after sitting down, to prevent falling flowers and fruits, at the same time nitrogen, phosphorus, potassium fertilizer should be complete. Winter stored wax gourd, especially large fruit varieties, stopped fertilizer and water supply 10-15 days before harvest, in order to reduce moisture in the melon and increase storability. The topdressing of wax gourd should be based on the principle of less before and more after. Generally, before the vine is drawn, the amount of topdressing accounts for about 30%, and the flowering and fruiting period accounts for 70%. Topdressing is suitable for hole application or strip application, which requires a total of 45 kg of urea, 50 kg of superphosphate and 25 kg of potassium sulfate per mu. In areas where conditions permit, topdressing can also use high-quality organic fertilizer (such as bean cake, 75 kg per mu, 4000 kg of dilute dung water).