1. The temperature in the seedbed shed is kept at around 30 °C during the day and not less than 15 °C at night. The first true leaf to 4 true leaf stage should be ventilated and cooled at noon, maintaining 25 °C - 30 °C. 7 days to 10 days before transplanting, control the water and reduce the temperature of the seedbed. Gradually increase the film venting time in the future until it is completely uncovered.
2, transplanting seedlings. When the seedling age is 5 leaves and 1 heart, it is transferred to Datian, and April 25 is suitable for planting. In the whole axillary acupoints, each line of two lines, the line spacing is 1.2 meters, the hole distance is 50 centimeters, about 20 grams of compound fertilizer is applied to each hole, and 1600 to 1700 plants are planted in acre.
3, set up the bracket. When the bitter gourd begins to pump the vines, the "human" bracket should be set up. The top of the rack should be connected by a crossbar. The fixed pole should be a bamboo pole with a length of 2.5 meters and a diameter of 3 centimeters. In the early stage, it is necessary to pay attention to artificial tying vines.
4, pruning and fork. After the bitter gourd is put on the shelf, the main vine can not be kept under 50 cm. The female flower should be removed to facilitate the overall development. After the main vine sits 6 - 7 melons, leave 5 - 6 leaves topping, while removing the rest of the vines.
5. Fertilizer management. The bitter gourd has a long growing period and the harvesting period lasts for more than 3 months. Therefore, it is necessary to ensure sufficient supply of water and fertilizer, especially in the fruiting period. If it is dry, water should be poured every 7 days. Before watering, urea or compound fertilizer should be combined with 7 kg to 10 kg per acre. In case of continuous rain, attention should be paid to drainage; at the same time, foliar potassium dihydrogen phosphate should be sprayed 2 times to 3 times.
6. Pest control. The disease of bitter gourd mainly includes anthrax, which occurs more than in the middle and late stages. Prevention and treatment should promptly remove residual, rotten and diseased leaves. It can also be sprayed with 50% thiophanate 800 times-1000 times liquid or 70% chlorothalonil WP 600 times in the early stage of the disease. The pests mainly include aphids and cabbage caterpillars, and the enemy can kill the emulsion 1000 times. Foliar spray of 2000 times liquid or 40% dimethoate 1500 times liquid.
7. Collect seeds in time. The fruit on a bitter gourd is mature. At the end of the season, you should pick a mature melon every day; use scissors when picking up, so as not to tear the melon. At the same time, remove the miscellaneous melons, choose the color and melon shape to keep the seeds, and pick them up on the same day. Take the seeds and wash them on the same day to ensure the seed germination rate.
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