Irrigated Clear Cooling Poly Plastic Film Greenhouse

Factory Price Clear Greenhouse Agricultural Plastic Film

1. Choosing suitable varieties In order to market in advance, varieties with good selectivity, short dormancy period and strong disease resistance should be selected. For example, Chunxiang, Baojiaozaosheng, Lihong, Nvfeng, etc., strawberry cross-pollination has an obvious effect on increasing yield, and the environmental conditions in the greenhouse are very different from open fields. More attention should be paid to the configuration of more than two pollinated varieties. The ratio of main planted varieties and pollinated varieties should be It is 1:1 or 2:1.

2. Cultivate high-quality strong seedlings for the purpose of cultivating strong seedlings; should choose from the high-quality female parent orchard between July and August the stolon seedlings with 3 to 4 leaves and well-developed ones, and fake them in the pre-prepared In the false planting border, the row spacing is 15x 15 cm. Apply 2 cm thick organic fertilizer in the border and increase the application of quick-acting NPK compound fertilizer. After the fake sandalwood is fully irrigated, use a reed curtain to shade. If the seedlings are transplanted again, it is more conducive to expand the root system and cultivate strong seedlings. About 1 month of fake planting, you can cultivate 5-6 leaves weighing 50-60 grams The high-quality strong bacteria.

3. Greenhouse soil preparation and planting before and after the beginning of autumn, fertilize the ground (organic fertilizer and phosphate fertilizer) in the greenhouse, turn rake to make ridges, the height of the ridge is 20-30 cm, the width of the ridge is 40-50 cm, and the width of the furrow is 30 cm. Late August By the beginning of September, move the high-quality strong seedlings with soil lumps in the false planting borders into the ridges in the greenhouse, cut two rows per ridge, staggered plantings. Planting 6000-8000 seedlings per mu. Water in time after planting to keep the soil moist.

4. Soil, fertilizer and water management. After the newly planted strawberry seedlings survive, they should be cultivated and weeded in time. Since strawberry is a shallow-rooted herb, the cultivating should be shallow, and the depth is 3-4 cm. After the slow seedling, it should be separated before flowering and young fruit. Topdressing chemical fertilizer 10-15 kg per mu. Water should be timely after each topdressing. It is still possible to spray 0.1-0.2% potassium dihydrogen phosphate liquid fertilizer 2-3 times after flowering to fruiting.

5. In the last ten days of October, when the temperature drops below 10°C, the greenhouse skeleton soil should be covered with a plastic film, and ventilation should be paid to prevent the temperature from shining over 30°C. When the minimum temperature in the shed drops to 10 When the temperature is below °C, the film should be covered with a paper quilt or straw curtain at night. The indoor heating starts in late November. This is the budding period. The room temperature during the day should be maintained at 26°C and at night at 8-12° C, the day temperature in December is 23-25°C, and the night temperature is not lower than 7C.

6. Artificially pollinate and sparse the small area of ​​the strawberry; you can use a brush to pollinate: the large area of ​​strawberry should be pollinated with a duster and a hair dryer. Each inflorescence of the strawberry blooms several, and there are too many buds. Insufficient nutrients can cause small fruits and deformed fruits, and high-node flowers may not even set fruits. Therefore, thin flower buds should be removed after budding. Each plant retains 2-3 inflorescences; each inflorescence tube fruit 3 to 4, after the strawberry fruit is set, the fruit droops and touches the ground, which is easy to contaminate the fruit. When the strawberry fruit grows to the size of a little finger, use a broken straw to pad the fruit To keep the fruit surface clean and increase the value of the product.

7. Prevention and control of diseases and insects The high humidity and high temperature in the greenhouse are prone to powdery mildew, ash disease and underground pests. To prevent and control diseases, spray 40% thiophanate methyl 300-400 times liquid before flowering, or 240 times Bordeaux liquid. It is strictly forbidden to use medicine during the flowering period. For the prevention and control of underground pests, 25% phoxim can be mixed with water or finely mixed before planting. Sand is scattered in the soil.

8. The inflorescences of strawberries harvested in stages have different blooming periods, the fruit setting is sequential, and the maturity is not consistent. In order to ensure quality, harvesting should be implemented in stages. Every time you harvest 3/5 fruits that have turned red, immature or overripe fruits will affect the quality of the product. Picking should be handled with care, preferably packed in paper boxes or plastic boxes, and sold in time after harvest