1 Variety selection should be selected as early maturing, small melons, melon yards, melons thick, good quality, the use of hormone treatment after the high fruit set rate. After several years of practice in the Yangji Township of Binzhou, the ideal variety for high yield and high efficiency cultivation of zucchini in greenhouses is “the younger generation”.
2 It is appropriate to sow seedlings at a proper time, and it is advisable to cultivate strong seedlings for live broadcast from late September to mid-October. Can also be grafted seedlings, because the grafted seedlings can enhance the development of the root system, improve the ability of zucchini wintering low temperature resistance, late onset of disease, increase production potential.
Zucchini seeds are sun-dried for 1 or 2 days in sunny weather. Hot water at 55°C is added to the enamel bowl and stirred while the seeds are being added until the water temperature drops to 30°C. Seeds are immersed for 4 to 5 hours. After the seed coats are washed, they are stored at 25°C. Under the germination, buds can be sown in 24 hours and the soil thickness is 2 cm. Maintain a high temperature before emergence, after the emergence of the maintenance of 20 ~ 25 °C during the day, 13 ~ 14 °C at night, in order to facilitate ventilation and hardening seedlings. If grafted seedlings are used, pumpkin seed is sown when the cotyledons of the courgettes are opened, maintained at 25-30°C before emergence and at a ground temperature of about 20°C. Grafting was performed when the first true leaf of the pumpkin appeared until it was unfolded. Grafting seedlings can be colonized with 3 leaves and 1 heart.
3 The period of colonization and colonization is appropriate from mid-October to early November. Fertilizers were applied before planting, fine soil preparation, double row high ridge cultivation, ridge height 15cm, ridge orientation mostly north-south, double ridges 60cm and 80cm, plant spacing 45-50cm, 1900-2200 plants per acre It is advisable to cover the plastic film after planting.
4 Management after planting
4.1 After the temperature is set, in order to speed up the easing of seedlings, it is necessary to increase the temperature of the shed, keep 25 to 30°C during the day and 15 to 18°C ​​during the night, and then sow the seedlings in 3 to 4 days. After easing the seedlings, they should be kept at 20-25°C during the daytime and 13-15°C during the night, and the melon period temperature should be 22-25°C.
4.2 Moisture At this time, the outside temperature is already low, so the water to be planted should be selected to be watered in the morning in sunny and warm weather. After the water is poured, the temperature of the greenhouse is slightly raised, which will facilitate the seedling sowing and ventilation. This water has a great influence on the amount of growth before the seedlings grow out of the squash and requires sufficient watering for the winter. Until the beginning of spring watering frequency is less, if the winter temperature is high or the soil is dry, you can water in the sunny days after the squashing period, but the amount of watering should not be too large. In principle, the temperature above 10°C should be maintained after watering, so groundwater is generally used for watering, and as much as possible, water is not poured from the frozen water in the river or the ditch so as to avoid damage caused by low ground temperature.
4.3 Adjusting the plants The cultivation of zucchini in greenhouses in winter is expected to last for a long period of time. The area of ​​large zucchini leaves and the smashing of vine leaves are an important measure for high-yielding cultivation in winter. When the squash gourd grows to 20cm, it must be hung in time. After the old leaves are harvested, the old leaves that have been grown for 30 to 40 days or more are gradually removed from the petioles. When removing the old leaves, do not cut them off from the base or the petiole by hand to prevent germs from infecting the wound or even causing the stem to become infected. If the old leaves are removed in time, premature aging is often caused by excessive nutrient consumption, and the plants are also susceptible to powdery mildew.
The zucchini is easy to sprout lateral buds from leafhoppers after squashing and new leaflets and female flowers are produced. These female flowers are not suitable for sitting on melons, and even if they are sitting on the fruits, they do not grow long or have malformed melons, thus affecting the commercial and economic benefits of melons. We must promptly exercise the power to remove malformed melons and sick melons to prevent excessive consumption of nutrients.
4.4 Illumination The zucchini is like the high temperature and strong light. In the deep winter season, the light hours are short and the light is weak. All the lightening measures can be used, such as cleaning the film, picking the leaves, hanging the vines, and hanging the light curtain on the back wall.
4.5 Application of Growth Regulators Before the flowering of Zucchini, if the nutrition growth of the seedlings is too strong or lengthy, use 500g dwarf toil to water the roots per acre shed, which will enable the zucchini seedlings to grow robustly. When female flowers are open, they are painted with rhododamine or 25 mg/kg of 2,4-D every day from 9 to 10 am. The specific method is: use a brush to draw the liquid on the female style, and then from the handle to the young larvae, so that the stigma, shank and young melon are coated with 2,4-D or anti-dropping agent liquid . Painted flowers should be combined with topdressing to promote the rapid growth of young melons. Root melon grows to 10cm, combined with water and fertilization, topdressing urea 15kg, potassium dihydrogen phosphate 5 ~ 10kg, after each harvest a pile of melons, top dressing once, the melon should be reduced later watering and topdressing.
5 Diseases and Insect Pests Preventing overwintering in plastic greenhouses The most common diseases and pests of summer squash are gray mold, powdery mildew, virus disease, aphids, whitefly, etc. Corresponding measures should be taken to prevent and control them. Botrytis cinerea can be used 1000 times antiviral, or 2000 times liquid fast-Kling, or 1500 times 50% of acetaminophen, spray 5 to 6 days, and even spray 2 or 3 times. Powdery mildew can be used 20% Triadimefon emulsion 2000 times, or 50% sulfur suspension 300 times, or thiophanate-methyl 600 times and other control, spray every 7 to 10 days, even spray 2 to 3 times, several The use of these agents alternately works well. Virus disease should be selected resistant varieties and no virus seeds; and disinfection and control of aphids. Aphid and whitefly control, aphids are mainly used 40% Leconin emulsion, or 20% extinguishing emulsion, or 50% Tuope mist wettable emulsion 2000 times, sprayed every 7 to 10 days, alternately used, even Spray 2 to 3 times; Whitefly can be used 2.5% Kung Fu EC 5000 times, or 20% of the Scandex EC 2000 times and other control.
6 harvest generally from late November to early December harvest root melon, root melon harvested earlier, 0.25kg can be listed, so as not to affect the second and third melons to sit and grow. In the future, every 15 to 18 days will be harvested.

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