It has been proved that intercropping cotton mulch with cotton can yield high yields, watermelon can increase production, and double harvests can increase incomes, making farmers become an effective way to become rich. The majority of farmers may wish to try. 1. Interplanting early-maturing high-quality watermelon varieties: After the cotton fields are covered with plastic film, if you want to plant watermelons in the cotton fields to increase income, you must choose short-range, early-maturing, high-quality watermelon varieties with short cotton symbiotic period. Such as: "early flower melon", "Hainan island melon", "eighteen days red", "secondary education" and other new varieties, so that we can sit early melon, early maturity, morning market, early drawing vines, early Teng Di. 2. Seeding method and sowing time: Generally used four feet a band, wide line 2.6 feet, narrow line from 1.4 feet. 3500-3800 strains of cotton were planted in Mu, 300-400 seedlings were planted in watermelon, and planted on the same side of sorghum cotton. A watermelon was planted between five or three cotton varieties. The sowing time is based on the local sowing time, soaking and seeding, and filming after planting. When the melon leaves grow to 6-7 leaves, press a guava soil at the roots of the melon, and lead the vines to the broad line. 3. Cotton and melon intercropping management techniques: general intercropping with cotton and melons, watermelons need water earlier than cotton, in order to ensure that cotton watermelons are not affected, as long as the melon leaves appear to fight black, should immediately pour water once. In order to promote cottonseed growth and seedling stage, spraying with 0.20% urea or 0.3% petroleum extender aqueous solution for 1-2 times, 20-25 kg of water per acre. After sitting on the melon, use 10% ash or 0.3% potassium dihydrogen phosphate aqueous solution to spray 1-2 times, 50-60 kg per mu solution to supplement potassium and trace element fertilizer. Can also spray 0.02% potassium permanganate or 0.2% of ferrous sulfate solution 1-2 times, the solution used about 50 kg per acre. After spraying, the quality and sugar content of the watermelon can be improved, and it can also promote the early ripeness of disease resistance. Pay attention to the timely release of seedlings, so as not to burn. If there are locusts in cotton, 2% of tobacco water can be used to smear seedlings or sprayed with 0.3% of detergent powder, 30 kg of mu.
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