Chestnut squash is oblate, with a fruit weight of 1.2-1.5kg. The delicate flesh, texture powder, sweet taste, excellent taste and quality are very popular in recent years. The main varieties are Sheng Jin and Ebisu, as well as domestically-selected jewelries, longevity stars and chestnut crystals. After three years of trial cultivation, the cultivation techniques are summarized below. First, planting seedlings - in mid-March, nutrition seedlings were planted in greenhouses. One seed was sown in each seedling, and 0.5 cm in cover soil after sowing. The cover film was kept warm until it emerged. The temperature is controlled at 25 ~ 30 °C, after the emergence of appropriate cooling, control at 20 ~ 25 °C. More than 600 seedlings per 667 m2 of production field were planted and water was controlled for 1 week prior to planting to improve seedling resistance. Second, site preparation fertilization - field planting before fertilization, soil preparation. Basal fertilizer uses 2000kg of high-quality organic fertilizer and 25% of compound fertilizer 50kg per 667m2. Single ridges were planted on high ridges and the ridge width was 3m. Black mulch was covered in the central area of ​​the ridge to improve the ground temperature and prevent weeds. Third, colonization - in mid-April when the seedlings up to 5 true leaves when the spacing of 45 ~ 60cm perforation and colonization. Fourth, pruning pruning - the use of single vine pruning method, to wipe out the side branches in time, and organize the branches, do not make it overlap staggered. By using double vine pruning, the planting density should be halved, and when the seedlings are 3 seedlings at the seedling stage, they should be picked up. The picking of the pods is delayed and the harvest period is delayed. When the ranch grows to about 20cm, it is chosen to keep two vines that grow in a consistent and healthy manner. At the same time, the pods with the fruit branches (about eight knots) of the following nodes are removed in time. Arrangement of vines in ridges should be reasonable. If the first vine spreads to the left side of the ridge, it should extend the second vine to the right side of the ridge, and so on. When the vine grows about 60cm, it can be covered with straw, wheat straw and so on. V. Top-dressing watering - A total of 2 top-dressings were conducted during the entire growth period. After the first time the fruit was set on the 1st, it was applied on both sides of the ridge. The second time during the first fruit harvest stage, the topdressing was applied at the tip position of the shoots. The amount of N and K fertilizers was 3 to 4 kg for each time, and the water was timely watered after each top dressing. Pumpkins are lush and have a large amount of evaporation. Therefore, they require more water during growth. After 1 week of planting, the water was irrigated once a week to promote the growth of branches and leaves; Afterwards, depending on the weather conditions, it should be properly watered to ensure fruit development. After the fruit is fully grown, the water should be properly controlled to promote fruit dry matter accumulation and improve pumpkin quality. Sixth, fruit setting and adjustment - single vine pruning fruit 1 fruit section in 15 sections, 2nd fruit in 20 sections. The double fruiting pruning section is located at 8 to 10 knots and the 2nd fruit at 15 knots. The specific operation can be adjusted according to the plant growth. Using artificial pollination or hormone treatment can increase the fruit setting rate and can flexibly adjust the node setting. After 10 to 15 days after fruit set, the young fruit is very vulnerable. Do not move the branches around the young fruit at this time. In addition, when the fruit is directly on the mulch or on the ground, the skin will be yellow and it is easy to breed diseases. Therefore, adding the bottom pad after fruit set can avoid the above shortcomings, and make the fruit surface even and beautiful appearance. VII. Pest Control - The main pests and diseases of chestnut squash include aphids, leafhoppers and leaf spot, and powdery mildew. The locusts and leafhoppers are treated with the "dichlorvos" emulsion 800 to 1000 times, "Aweedenqing" and other 1500 to 2000 times liquid; leaf spot, powdery mildew, "chlorothalonil", "thiophanate", etc. 1000 Double liquid for prevention and treatment, pay attention to the back spray. Eight, harvest - chestnut squash 40 to 45 days after fruiting, the pulp is completely yellow, the seeds are also enriched, and you can harvest at this time.
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