Key points of high-yield cultivation techniques for intercropping 1. Selection of land: It is best to choose a well with a subsurface drip irrigation. The sand loam soil that has not been planted with melons is the best, followed by Pingchuan, but the soil is neutral.
2, seed selection and seed treatment: watermelon species choose the commonly known "mine watermelon", is round, flower skin, seeds 1,700 / hectare. The United States has 7101, Tiankui and so on. Soak the purchased seeds in cold water for 6-8 hours, that is, we will soak at about 8 o'clock in the evening of the first day, and at 6 o'clock the next morning, we will pick up the seeds and hand lick them, then put them in Squeeze the sack and pry off the outer film of the seed to promote seed germination. After squatting, suffocate for a while, and see the "white mouth" just planted. Do not use any coating agent or other fungicides.
3, soil preparation fertilization: first remove the scorpion of the former sorghum crop and the residual dead leaves and rot, then ridge and squash, break the soil shovel, and then ridge. First gap, the bottom fertilizer is applied into the ditch, the depth is about 12cm, then the soil is flat and the width is 90cm. In the middle and late April, the ridges are combined with farmyard manure and chemical fertilizers. The hectares are about 2,000 kg of farmyard manure, 1000 kg of compound fertilizer and 100 kg of urea. The compound fertilizer is a 45% potassium sulfate type compound fertilizer, and the nitrogen-phosphorus-potassium content is 12%-18%-15%. Apply fertilizer and topdressing. 400 kg of base fertilizer and 600 kg of topdressing. After the fertilization and ridges are completed, the sputum is fine and flat, and the peritoneum is sown after seeding. The membrane is made of a film of 1 m to 1.1 m, which is about 8,000 m per hectare, and each bundle is about 100 yuan.
4, sowing: watermelon planting around May 15th, the United States sunflower in late June and early July. Use a puncher to make an eye, or use artificially to sown in the ridge of the ridge, one eye per eye. When the watermelon begins to result, a single sunflower is planted between the two watermelons. According to the dry and wet conditions of the soil, water is poured twice, the plant spacing is 85cm, first press it on the ridge platform with a four-wheeled vehicle, press a shallow ditch, and then use the iron shovel to cut a small ditch at a distance of 85cm on the shallow ditch. Sowing on the small ditch that was cut, and then covering the soil 2 inches deep (that is, 2 fingers), must be artificially planted, artificially covered with soil, and then the peritoneum. Use the laminating machine for the peritoneum, use the person to find the place where the cover is not strict, and use the iron shovel to train well. Do not leak or leak the air, and do not use any herbicide to avoid affecting the emergence or disease.
5, field management: This is the most critical period, first look at the seedlings after 4-5 days, if the weather is hot, the temperature is high, use the branches in the watermelon seedlings next to the small eyes to let the wind. When you reach the cross flower, use the branches to enlarge the wind. In the future, I will look at pests and diseases, contact the technicians, and contact the technicians when there are problems (such as what medicine to spray, when to spray, etc.). At this time, the watermelon began to stretch the vines, and the vines must be rushed in time. If the species is north-south, you should shun the vines in the east. If it is a ridge of the east and west, you should follow the vines in the south. After the vines are finished, prepare to keep the melons. Leave one for each plant and leave the melon on the vine. The main vine grows about one foot long and then the vine is the vine. When the melon is in 10-12 pieces, the vine must pass through the ditch.
6, harvest: one-time harvest. On August 10th, the basic harvest was completed. The whole period from sowing to harvesting was about 80-90 days, and the average watermelon was about 15 kg. A total of 13-15 million jin of watermelon is collected per hectare, and more than 4,000 jin is harvested by the US sunflower. The net income per hectare is calculated to be 50,000 yuan per hectare.
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