Cultivation techniques of greenhouse zucchini
Variety At present, banana zucchini with early-green generation, black beauty, emerald and yellow peel is produced. 2. Pass Arrange early in the early spring, it can be planted for 20-30 days earlier than cucumber. From January to February, sowing seedlings should be planted from late February to early March. It will be listed in the middle and late April, and will be pulled in early June; autumn and winter will be planted in late August. Planted in late September, harvested in early November, can be delayed until late April. 3. Nursery technology 3.1 Strong seedling index Plant height 15-16cm, stem diameter 0, 4-0, 5cm, with 2-3 true leaves, short internodes, compact plant type, developed root system, no pests and diseases. In order to achieve the strong seedling index, the seedling should be done: the soil is large (10-12cm), the seedling age is short (average seedling age 30-35 days), the temperature is low (the seedling period is 18-22 °C during the day, night 8 -10 ° C). 3.2 sowing 500 grams of seeds are required for every 667 square meters. The seeds were soaked in warm water of 60-62 ° C for 10-15 minutes, sterilized, then soaked for 8-10 hours, drained, wrapped with wet gauze, and budded at 25-28 ° C for 48 hours. The proportion of nutrient soil in seedlings is half of organic matter and fertilizer garden soil. Mix thoroughly into a plastic cup. After filling the water, seed one seed of each germinated seed with a thickness of 20 cm. To increase the ground temperature, a geothermal line can be laid in the nursery bed. 3.3 Seedling management Sowing to emergence, temperature 25-30 °C during the day, 16-20 °C during the night, 3-4 days can be used to produce seedlings; to prevent the seedlings from growing after emergence, the temperature should be lowered, the daytime temperature is 20-22 °C, and the nighttime is 10-12 °C It can not only make the seedlings grow vigorously, but also promote the differentiation of female flowers. At the late stage of seedling cultivation, the seedlings were subjected to low temperature exercise, with a temperature of 18-20 ° C during the day and 6-8 ° C during the night. In plastic cup seedlings, the principle of temperature control and water control should be mastered. The seedlings should be drenched in the drought, and the watering in the general seedling stage should be 2-3 times. In order to make the seedlings grow neatly, the mobile seedling method should be adopted to place the seedlings on the south side of the greenhouse seedbed, and the smaller seedlings are placed in the middle of the seedbed where the light temperature is better. When the seedlings are poured, the nursery can be appropriately increased. The distance makes the seedlings tidy and strong. 4. Planting technology 4.1 Soil preparation Fertilization The root system of zucchini is developed, with strong water and fertility. Apply 3-4 tons of fully decomposed organic fertilizer per 667 square meters, 20 kg of phosphorus diamine, turn over twice, deep 20-25cm, and apply in the fertilization method. The method of universal application combines two-thirds of the organic fertilizer into the general application, and one-third of the organic fertilizer is applied or applied. Then, a sorghum having a width of 60 cm, a groove width of 40 cm, and a height of 15 cm was prepared, and then covered with a mulch film. 4.2 Management early spring after planting, when the ground temperature of 10cm is stable above 8-10 °C. The temperature is stable above 3 °C, and the temperature above 20 °C is maintained at 5-6 hours during the day. It can be planted at the beginning of February. The row spacing is 1m, the plant spacing is about 40cm, and 2000 plants are planted per 667 square meters. The "cold tail hot head" was chosen to be carried out on a sunny morning. At the time of planting, the hole is filled with water, sealed with wet soil, and then irrigated once after 2-3 days; after the seedlings survive, choose a sunny day, carry out a ditch irrigation, the surface is dry after irrigation, and the soil is loosened by cultivating the ditch. Autumn and winter crickets are planted in early September, and they are selected for cloudy afternoons. In order to prevent high temperature dead seedlings after planting, they can cover the sunshade net to prevent high temperature and avoid strong light, and promote slow seedlings. During the flowering and fruiting period, the daytime temperature is 20-25 °C, and the nighttime is above 15 °C; during the fruit expansion period, the daytime temperature is 20-23 °C, and the nighttime is 13-15 °C. In the management of water and fertilizer, before the seedling period to the flowering and fruit setting, the ploughing and water conservation, water control and fertilizer control are mainly used to prevent the occurrence of excessive or “crazy†due to excessive soil water and fertilizer. When the root melon fruit begins to expand, 15-20 kg of diamine phosphate is applied per 667 square meters of combined irrigation, and the second top dressing is carried out when the second and third fruits are inflated, and 20 kg of urea is applied per 667 square meters. After irrigation and top dressing, pay attention to the release of air and moisture to prevent the occurrence of gray mold. 4.3 Huhua preserved fruit Zucchini planted in the greenhouse is prone to emergence of melons, must be artificially assisted pollination, the method is "every day at 6-10 am, take the male flowers to remove the corolla, gently spread the stamens of the male flowers on the head of the female flower Artificial pollination can be completed, and 3-4 female flowers can be given to each male flower. The stigma and fruit stalk can be treated with 20x10-6 2, 4-D or 60x10-6 anti-fallin to prevent melon and promote fruit enlargement. Spraying 0, 1% keening solution on the head of young fruit can prevent gray mold from harming young fruit. 4.4 Plant adjustment (1) The squash is planted in the winter and spring season, and the squash is well ventilated. Each plant was hanged with nylon rope to grow the plants upright. (2) Pruning leaves Zucchini is mainly composed of main vines, and should be removed early for side branches; the leaves of zucchini are large, the petiole is long, and it is easy to be shaded. The diseased leaves, yellow leaves, residual leaves and old leaves should be removed early, which can promote ventilation, light transmission and disease prevention. Contagion. (3) Renewing the whole stage of pruning growth, the middle and lower leaves are aging, and the plant growth potential is weak. The middle and lower leaves should be removed, and the upper 1-2 side branches should be selected, and the main vines should be replaced after topping. 5. Harvest The zucchini is made from fresh and straight young fruit. When the young fruit grows to 0.5-1.0 kg, it should be harvested. In particular, the first two fruits should be harvested early to prevent "falling" and ensure high yield. After the young fruit is harvested, it is wrapped in raw paper and packaged for sale. 6. Pest control 6.1 Gray mold Botrytis cinerea is firstly inoculated into the ovary by the stigma of the pistil at the flowering stage, so that the top of the young fruit is mildewed and rotted, and the product value is lost. In addition to strengthening the venting and venting, the spray can be sprayed with 50% keining 1500-2000 times liquid; 58% Retinol 1000-1500 times liquid; can also be used as bacteriocin smoked smoke. 6.2 Powdery mildew 20% powder rust emulsion 2000 times solution for pharmaceutical control; 300-400 times solution for 50% sulfur gum suspension; 1000 times solution of 70% methyl thiophanate; 400 times solution of Fuxing. In addition, with 500 times of baking soda, 300 times of saline solution also has a certain control effect. 6.3 Locust Use 40% deltamethrin emulsion 3000-4000 times solution; 1.8% loved lotion 1000-1500 times solution; 10% imidacloprid wettable powder 1500 times solution. Disclaimer: Some articles on this website are transferred from the Internet. 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