Because of its rich nutrition and unique flavor, zucchini is a vegetable that people like very much. The use of arch round sheds for postponed cultivation of autumn cucurbits, yield 4000 ~ 5000kg per mu yield. Now its cultivation techniques are summarized as follows: First, the use of fine varieties of autumn-delayed summer cucurbit should use early-maturing, disease-resistant, moisture-tolerant, shade-tolerant and low-temperature-tolerance varieties such as the early young generation, a litter of monkeys and Algeria. Second, the appropriate sowing, grafting, nurturing strong seedlings 1. Sowing period. Late autumn zucchini is generally sown at the end of August to the beginning of September. Due to the late autumn cultivation temperature is gradually lower, poor light, premature aging, grafting method should be adopted. Generally used by the connection method, Zucchini sowing 2 ~ 3d (days), then sow black seed pumpkin. 2. Soak germination. The method of impregnation and germination of pumpkin seeds and squash seeds is the same. First, rinse off the seeds with poor ripeness and then pour the seeds into 55°C water. Stir constantly. When the water temperature drops to 30°C, soak it for 4~6h (hours). Rinse with clean water. Water, wrapped in sand, placed in 25 °C ~ 3O °C environment germination. 3. Seedbed preparation. At the end of August, there are many rainy days, and the Mu bed should be selected from high-lying, can drainable, loose, and fertile soil. In recent years, the plots of melons and vegetables have not been planted, 10 days (days) into mature chicken manure, 10 kg per square meter of seedbed, and soil sterilizing with carbendazim (according to instructions for use). 1.2m wide mattress. 4. sowing. Seeds of zucchini are seeded at a distance of 5 to 8 cm. After the soil is covered with 3 cm and 3 days (days), black seed pumpkin seeds are sown in the same manner. After sowing, in order to prevent surface drying and rain shower from affecting seedling emergence, small arch sheds are covered with film, but the temperature should be controlled at 25°C～28°C. If the temperature is higher than 28°C, release air promptly. After 70% emergence, the film can be removed. Prevent leggy. 5. Grafting and management. The first cotyledon of the summer squash is microscopically suitable for grafting. Using the method of connection: Dig out rootstock seedlings, remove rootstock growth points, and use a blade to make a 45-degree downward cutting knife at 0.5-1cm below the rootstock cotyledon, which is 2/5 to 1/2 deeper than the embryonic axis. About 1cm. Then take the scion (squash) 1.5cm below the cotyledon, cut with a blade at 45 degrees upwards, 1/2 to 2/3 of the depth of the hypocotyl, equal in length to the rootstock, and match the rootstock and scion's interface. Clip on the grafting clip, plant it on a well-prepared seedbed, and plant it while watering, and insert the membrane over the arch cover, cover the straw curtain, shading 3 ~ 4d (days), gradually withdraw the straw curtain, after 10d (days) Cut off the radicles under the interface of the zucchini. After the wounds healed, increase the amount of ventilation to consolidate the seedlings. The 3 leaves 1 heart to 4 leaves and 1 heart are suitable for planting. Third, colonization 1. Fertilization, soil preparation, and hoeing. Choose lands that have not been planted with melon vegetables in recent years, loose soil, and build sheds. Apply perennial decomposed chicken manure 4000-5000kg, ammonium dihydrogen phosphate 25kg, N, P, K compound fertilizer 15kg, urea 15kg, deep Turn 15cm, smashed, made of high 15 ~ 20cm, width 70cm rake, do 8 ~ 12cm deep watering ditch in the middle. 2. Colonization. Dark water colonization, double rows per plant, plant spacing 50cm, 2200 plants per acre. Fourth, management 1. Temperature management. After planting, the temperature was maintained at 25°C to 30°C to facilitate the seedlings' emergence. When the temperature exceeded 30°C, the air was released in time, and the seedling temperature was controlled at 20°C to 25°C after the seedlings were sown. As the outside temperature gradually decreases, when the temperature is between 12°C and 15°C, straw curtains are to be capped at night, but it is necessary to remove the cover and extend the lighting time as soon as possible. Before the first female flower is opened, the temperature is 22°C to 25°C. After the temperature of 22 °C ~ 28 °C, promote fruit growth and development. In the middle and late periods, there are often cold currents accompanied by rain and snow. Attention should be paid to insulation. The temperature should not be lower than 8°C. The opaque cover should be covered as early as possible, and ventilation should be reduced. 2. Water management. Planting easing seedlings and irrigating the seedlings once, and controlling the watering of the first female flowers before the opening results; if it is very dry, it can be used to water the horses to prevent the seedlings from going crazy. The first watermelon can be poured after sitting. In the early period, ventilation and dehumidification should be conducted in time. Although the temperature is low in the middle and late periods, it should be ventilated and discharged at noon on sunny days. 3. fertilizer. After planting and easing seedlings, according to the seedling's long-term application of a fertilizer, Mushi 10 ~ 15kg ammonium dihydrogen phosphate, after the root melon harvest, such as lack of fertilizer, can be combined with water application of ammonium dihydrogen phosphate 10kg, in the late stage will increase the shed fertilizer Internal temperature, resulting in disease epidemic, optional sunny noon, every 5 ~ 7d (days) spray 0.2% potassium dihydrogen phosphate and 0.2% urea mixture 2 to 3 times. When ventilation is reduced, opaque coverings can be removed and CO2 fertilization can be performed. 4. Use of growth regulators and plant adjustments. 1 growth regulators use due to poor light in the greenhouse, plant growth is weak, high humidity, easy to melon, female flowers open 8 to 10 am with 15 ~ 30mg/kg of 2.4-D flower stem and style, to benefit seat cucumber. 2 Plant Adjustment After the first melon is harvested, hang the vines and remove the side vines in time. If the side vines have tender vines, the top buds can be left with 2 to 3 leaves. With the aging of the lower leaves, the old leaves are timely and sparse. V. Prevention of Diseases and Insect Pests The autumn delay of early summer squash is prone to virus disease, and it is easy to dye gray mold, powdery mildew, cotton rot, and sclerotinia in the middle and later stages. In the early stage of viral disease, 20% of virus A or 15% of virus may be sprayed 2 or 3 times. If there is a tendency to spread, spray with anti-toxic agent No. 1 250 to 300 times 3 to 4 times; after powdery mildew occurs, use 20% triadimefon, 50% sulfur suspension, 2% agricultural anti-120 spray have better results. Gray mold appeared. In the early stage, 10% fast-king smoke agent or 45% chlorothalonil smoke agent was smoked at night, and in sunny days, 50% acetaminophen or 50% fast-inking spray was also used for prevention and treatment. After a disease occurs in the shed, it is necessary to strengthen control of pesticides while also paying attention to controlling watering. In sunny days, it is necessary to increase the amount of ventilation to remove moisture. 6. Harvest When the first melon reaches 0.3kg, it will be harvested in time to prevent it from falling, causing premature aging of pods and other female flowers.
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