First, a reasonable line spacing, timely transplanting or live ridge width of 2 meters, planting watermelon line, if the selection of medium-maturing watermelon varieties, spacing of 6 cm, 500 per acre; if the selection of medium-aged grafted watermelon (with asexual hybrid advantage Strong features), spacing of 8 cm, 400 acre. Cotton should use medium-maturing varieties that are insect-resistant, disease-resistant, and late-bellied. They should be planted on both sides of the watermelon line. The melon and cotton should be separated by 35 centimeters, and the cotton line should be separated by 33 centimeters and 2000 plants per acre. It is better to change the film to 1.2 to 1.4 meters wide. Cotton was nursed from the end of March to April 5, and membrane water was transplanted from late April to early May. Live cotton can be performed around April 15. Before transplanting the watermelon, first sowing the cover film, each hole 3 to 4, with a submerged species, covering the thickness of 3 to 4 cm, pay attention to cotton seedlings unearthed in a timely manner after the rupture of the membrane to prevent soiling. After transplanting the watermelon, if the cotton breaks the film with water on demand, or the side film on demand, the sowing date will be postponed to April 15th after the sound (breaking film on demand or side film soaking temperature is slower). Second, phased fertilization, to meet the requirements of melon cotton fertility requirements (a) deep base fertilizer. Phosphorus and potash fertilizers are mainly used, supplemented by nitrogen fertilizer, combined with uniform application before plowing in early spring. The early available nitrogen fertilizer should not be too much, otherwise the watermelon will be long-term and affect the growth of sitting cucumbers and cotton. (b) Cotton bud fertilizer. After the flowering of cotton, the demand for fertilizer gradually increases. Before the flowers are seen in the cotton field, 25 kg of special fertilizer for cotton and 5 kg of urea are applied per mu to make up for the shortage of phosphorus and potassium fertilizer in the middle and later stages to prevent the premature decline of cotton production; fertilization can be used. The method of applying a deep hole is applied between adjacent cotton plants. (3) Watermelon expanded manure. Before ripening, the watermelon is in the peak period of fertilizer, accounting for about 70% of the total fertilizer requirement. When the watermelon grows to the size of a duck egg, timely application of 10-15 kilograms of urea is beneficial to the enlargement of the watermelon and the increase of the yield. (D) cotton flower bell fertilizer. In mid-July, after the harvest of watermelon, combined with stubble soil, topdressing 10-20 kg of urea per acre, promote cotton growth and development, and enhance the bell strength in the middle and late period. Fertilization methods: flooding or spreading trenches, or combined with irrigation. In early August, if there is a significant decline in cotton, it is necessary to make a timely application of cover fertilizer, generally 75 to 10 kg of urea per acre. Third, the other management of watermelons should be based on vines and vines, so that the spread of guava spread evenly and suppress long growth, which is conducive to the growth of watermelons and melons. In principle, a melon, trying to watermelon consistent maturity, timely harvest, do not end with two melons, in order to facilitate the growth and development of cotton in the late. Fourth, the other cotton management (a) fine pruning. When the cotton begins to bud, it is necessary to go to the leaf branch twice in time. In the more prosperous cotton fields, axillary buds are often wiped off to reduce nutrient consumption. (B) to control lightly. The watermelon intercropping cotton was affected by the watermelon in the early stage, and the cotton plant grew slowly. In addition, the width of the cotton plant and the thinning of the plant were increased, and the control should be lighter. Mask women's summer thin 3D three-dimensional disposable masks, three-layer white net celebrities, men's trendy models, have a small sunscreen, and are light and thin in summer, which are not sultry and hot to wear. Disposable 3D three-dimensional protective mask, large space does not stick to the lips. Anti-dust, anti-pollen, anti-droplet, anti-particulate. Breathe healthily and enjoy the clean air. Three-layer filtration, soft veneer, dustproof and haze-proof. Absorb peculiar smell, three-dimensional combination, breathable and easy to breathe. Three-dimensional cutting design, dust-proof and haze-proof. China 3M Face Mask,3D Disposable Mask,3D Folded Face Mask,Face Mask Applicator, we offered that you can trust. Welcome to do business with us. 3M Face Mask,3D Disposable Mask,3D Folded Face Mask,Face Mask Applicator KUTA TECHNOLOGY INDUSTRY CO.,LIMITED , https://www.kutasureblue.com