Main points of cultivation techniques for greenhouse squash

First, fertilize the soil, fine land preparation

 

　　 1, site preparation fertilization of greenhouses to be shed new land formation, then Shutu 20--30 cm backfill evenly ground. For the old greenhouse, the ground should be deep-turned and dried before planting to increase soil permeability. A large amount of organic fertilizer and compound fertilizer should be applied before planting. The organic fertilizer needs to be tampered in advance, fully decomposed and decomposed, and the compound fertilizer should be mainly selected from high-concentration such as phosphorus, potassium, boron, magnesium and calcium.

 

　　 2 , the soil is even, the depth is the same. No matter how much fertilization, no matter whether it is organic fertilizer or chemical fertilizer, it must be evenly mixed with the soil, the depth should be less than 30 cm, avoid applying fertilizer, not applying seedling fertilizer and acupoint fertilizer to prevent root damage.

 

　　 3 , ridges and sturdy thickened soil layer, concentrated nutrition, loose soil. Good permeability, on seedling growth and root zucchini are very favorable, but also further improve air and light conditions, photosynthetic ability to increase dry matter accumulation in claim ridge ridge width 1.4 m, an average ridge high 15--20 cm, formed The inner high and the low slope are easy to cover the film. The north-south direction grooves between ridge, ridge with ridge 40 cm, underground drain opening on the ridge, both sides of a plant row zucchini article, the implementation of a triangular planting, plant spacing of 50 cm.

 

Second, cultivate strong seedlings

 

　　 1. Selection of good varieties: Choose the varieties of zucchini that are cold-tolerant, precocious, good in quality, good in product quality, and high in yield, such as black beauty, French winter jade and other varieties.

 

　　 2, soaking germination: the seeds into 20-- heated to 30 deg.] C soak 2--3 hours to let the seed coat, germ latter meat and sufficient water absorption, remove and dry seed coat, wrapped with a wet towel, placed 25 - 30 deg.] C at the germination, the shoot to be 0.2 - 0.4 cm to sowing.

 

　　 3 , prepared nutritious soil: the preparation of nutritious soil, one should choose to grow vegetables and fertile topsoil for many years, the second is to add decomposed organic fertilizer and insecticide, fungicide. The ratio of organic fertilizer to soil is between 3 : 7 and 4 : 6 , and the two must be thoroughly mixed, finely sifted and sieved for later use. The nutrient soil is mixed with 1500 times of phoxim emulsion, and sprayed 3000 times of green on the surface of the seedbed to enjoy the No. 1 fungicide.

 

　　 4, careful breeding: 10 breeding period 1st - 10th appropriate, by planting early December to enter the mining Guaqi, in late January into full fruit stage, at a time when prices peak economy best.

 

Third, colonization and management

 

　　 1, planting time: seedling age 15 - Start planting 20 days, when the first true leaves fully expanded, the second true leaf is half extension, the best planting time. After the planting of the zucchini, the shed temperature should be kept at 25 °C ~ 30 °C during the day and 18 °C ~ 20 °C at night to promote the slow seedling. The temperature should be appropriately reduced after the seedling is slowed down, and the daytime control is between 20 °C and 26 °C, and the nighttime is between 12 °C and 15 °C to promote the robust growth of the plant. After the melon is fixed, the temperature is raised appropriately, and it is maintained at 25 ° C to 30 ° C during the day and 15 ° C to 20 ° C during the night . Increase the temperature difference between day and night to facilitate the accumulation of nutrients and the expansion of melons.

 

　　 2, fertilizer and water management: water when the first fruit up to 10 cm of the first fertilizer, topdressing fertilizer per acre 25 kg, after 15--20 days pouring time, with watering top dressing. Watering is generally carried out on sunny days in the morning, and it is not poured on cloudy days to prevent the temperature of the shed from being lowered and the disease is aggravated.

 

　　 3 , artificial pollination: zucchini is a male and female cross-pollinated crop, under the cultivation conditions of the greenhouse, artificial pollination must be carried out. Method: 9:00 Daily - 10, the day of the open male taken, remove the corolla, the male stamen to the stigma of the female flower lightly coated, to grant the pollen, male flowers may be granted every five female. At the same time , applying 20 ppm of 2 , 4 ～ d solution to the female flower stigma or flower stalk can increase the fruit setting rate. In addition, when there are too many flowers in the plant, appropriate flowering should be done to ensure that the plants are normally knotted.

 

　　 4 , pest control: greenhouse squash mainly have viral diseases, gray mold, mites and white meal. The virus is mainly based on prevention, and the poisoning pests are eliminated. In the early stage of the disease , the control of the enemy, the virus, and the virus 1 can be used; the gray mold can be controlled with the carbendazim and the anti-mildew; the powdery mildew can be controlled by the sulphur suspension; the mites It can be controlled by cockroach No. 1 , and it can be controlled by imidacloprid, chlorpyrifos or yellow plate.

 

Source: China Agricultural Promotion Network

 

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