Western melon fertilization is not suitable

The yield and quality of melon can be greatly related to fertilization, especially the sweetness of melon, and whether fertilization is appropriate is a decisive factor. Production practice has proved that the fertilization of western melon should be done in nine cases.

　　 1. It is not advisable to apply chlorinated fertilizer to western melon to contain chlorinated fertilizer such as ammonium chloride and potassium chloride. Chloride ions enter the plant body, which will reduce the sugar content of western melon, so that the taste of western melon is sour and the quality is deteriorated. Fertilizers such as ammonium sulfate, potassium sulfate, and potassium dihydrogen phosphate should be applied.

　　 2 , it is not appropriate to apply nitrogen fertilizer to the application of nitrogen fertilizer, the plant body is too much nitride, the sugar contained in the pulp will be reduced, the quality is reduced, the meat is tender and tender, the color is light and thick, and the taste is sour. At the same time, partial application of nitrogen fertilizer is also likely to cause vine leaves to grow wild and affect the rate of results. Generally, the ratio of nitrogen, phosphorus and potassium is 2.8 : 1 : 3.7 , which is scientifically and reasonably used to promote the healthy growth of the melon and improve the fruit quality.

　　 3. It is not advisable to apply concentrated fertilizer when the soil is dry in the soil when the soil is dry, which will cause the cytoplasmic aqueous solution of the western melon root to penetrate outward, causing the separation of the cytoplasmic wall, which may cause the physiological loss of the cantaloupe vine leaves and wither or even die. At this time, low-concentration fertilizer should be applied, and fertilization should be carried out after watering first , or fertilization and watering should be carried out simultaneously.

　　 4 , should not be fertilized in rainy days. The air humidity is high and the soil moisture content is high. At this time, fertilization is not only easy to lose fertilizer, but also causes the branches and leaves to grow long, making the leaves and vines crisp, which is not conducive to sitting and melon, and easy to induce Western melons are ill.

　　 5 , should not be close to the west melon root fertilization melon vines stretch, the root system also spread to the distant, at this time the near roots of fertilization can not be fully absorbed and utilized; at the same time, too close to the roots fertilization easy to burn roots.

　　 6 , should not apply surface fertilizers, such as applied to the surface of the soil, not only the fat loss of volatile, but also easy to burn melon seedlings. Melon dressing should root stump at a distance of 20--40 cm, open hole deep application, and then the casing, to prevent fields as a nutrient losses.

　　 7. It is not advisable to apply cow manure and fermented fertilizer containing cow dung. After applying cow manure to the melon, the quality of the melon is seriously degraded and the taste is not good.

　　 8. If ammonium bicarbonate is not applied as a base fertilizer or top dressing when the soil is dry in the surface soil , it should be covered immediately after deep application in the case of soil moisture. In case of dry weather, it should be poured with water or watered after application.

　　 9, immediately after the irrigation should urea nitrogen contained in the urea is present in a state of an amide, amide nitrogen is converted to ammonium carbonate or ammonium bicarbonate as melon roots after absorption, generally 3--5 days before conversion, urea whether as basal or top dressing, irrigation should be completed before its conversion.