The spring-grown zucchini is a kind of vegetable that was first listed on the early spring melons, and it has made a positive contribution to crossing the spring, and it is also a main species that the vegetable grower obtains high-efficient cultivation. The varieties of summer squash used for early spring cultivation are mainly the young generation of the early Qing, the Atai or the Yinqing generation. Seedlings can be sown or grafted. Sowing seedlings such as the greenhouse cold bed breeding method, the sowing date is generally from December of the previous year to February of the current year. The earlier the sowing, the sooner the market is listed, the higher the output in the early period. Grafting seedlings first black seed pumpkin seeds, hot water sterilization after germination, and then germination. When 50% of the seeds are dewy, the seeds of the squash are sterilized with hot water and soaked in water for 7 hours. Then the black-skin squash and the zucchini are sown at the same time. Cover the soil with 1.5 to 2 cm of seed, cover a small shed, and add plastic film when the shed temperature is not enough. When 70% of the seeds are unearthed, the arches and mulches can be removed. There is a white dry phenomenon in the bed soil. Other techniques are similar to cucumber grafting. 9 to 10 days after grafting, the roots were cut off, and the roots were transplanted and planted 3 to 5 days after the root cut. The colonization of the colonization was 60 cm and 50 cm. After planting, the root water was poured and the shed was closed for 5 to 7 days. After the slow seedling period, when a single new leaf grows, pour a gentle seedling water. Shed temperature control in the daytime 20 ~ 25 °C, 11 ~ 14 °C at night, to prevent seedlings leggy, to promote the formation of female flower differentiation, early emergence of female flowers early melon. After opening the female flower, use 2,4-d30 mg/kg to promote it to sit. Because there are no males in the previous period, when there are male flowers, artificial pollination should be carried out before and after 7:00 in the morning. After the plants are sitting on the melons, the temperature in the sheds should be controlled at 25-28°C during the day and the maximum temperature should not exceed 30°C. After sitting on the melon, the temperature of the shed is appropriately increased to accelerate the growth of the plant and enlarge the root melon. When the first tender melons were harvested, it was time for spring flowers to bloom. Its management is mainly based on cooling and dehumidification. In the middle and late March, the small arch shelter was removed and the top film of the greenhouse was removed in mid-April. Appropriate amount of water, reasonable fertilizer, mainly potassium, nitrogen fertilizer, combined with watering per acre top 10 to 15 kg of potassium sulfate and urea 8 to 10 kg. After the convulsions on sunny days, the plants were able to pollinate normally, but on the rainy days, 25-30 mg/kg of 2,4-d fluid was needed to protect the fruit. Early spring cultivation of summer squash in the greenhouse, the pests and diseases are not serious, although powdery mildew occurred later, but due to the low price of late, can be early to stop the garden, arrange the production of the next crop. Insect pests are mainly locusts, and they are treated with great merits.
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