Fruits Flower 8m Single Span PE Plastic Film Greenhouse

Plastic Film Greenhouse with Equipment for Agriculture / Plant Vegetables Fruits Flowers

1. Film greenhouse management needs to be covered with film before frost occurs.

The initial temperature is relatively high. You can uncover the feet for day and night ventilation, and adjust the temperature with the amount of ventilation. The daytime temperature is controlled at 20-220, and the night temperature is about I5TC. When the indoor temperature drops below 10C at night, close the wind at night, and when the temperature drops below 10C at night when the air is closed and not ventilated, the grass will be covered. In the initial stage, cover it late and uncover it early, and then cover when the temperature drops to about 10C. The sun will uncover as soon as the sun comes out in the morning. It is still controlled at about 20C during the day. As the outside temperature drops, the ventilation volume will be gradually reduced and the ventilation time will be reduced. The lowest temperature at night Keep it above 6C. In case of disastrous weather, the area north of latitude 41* should be covered with paper quilt or double-layer grass to prevent the indoor temperature from approaching 0C.

In the film greenhouse, topdressing of urea before covering the film, combined with watering, tops urea 15 kg per 667 square meters, sprayed when there is no dew on the leaves near noon, use a new broom to clean the urea that falls on the leaves. -Water the border immediately, and the amount of water should be below the disc-shaped stem to avoid burning the heart leaves.

After watering, strengthen ventilation and dehumidification. This water and fertilizer can promote the development of the root system, the full growth of outer leaves, and thicken the shortened stems, and accumulate more nutrients for the growth of the petioles. It can be used to enter the upright growth period in the heart leaves, strengthen the management of water fertilization, and add 40 kg of ammonium sulfate per 667 square meters, combined with watering, the method is the same as the previous time. Always keep the ground moist after watering.

When the plant height is above 20 cm, spray gibberellin once. With 30 mg/kg of gibberellin and 200 times the urea mixture, the spray effect is better.

2. Vegetable management in solar film greenhouse

(1) Temperature management, the outside temperature is low in the initial stage of planting, and the temperature and ground temperature should be increased as much as possible. Greenhouses for cultivating spring celery, especially the solar greenhouses north of latitude 40, have poor lighting and thermal insulation performance. In the event of disastrous weather, thermal insulation measures are very important. In addition to covering with double-layer grass thatch and covering paper quilts, they also A small arch can be buckled on the border surface. In order to improve the thermal insulation effect, try to prolong the high temperature time during the day, with small ventilation over 25C, close the wind when it drops to about 20C, and try to keep the night temperature around 10C. After the beginning of spring, as the temperature increases, in order to promote the accelerated growth of celery, the temperature can be appropriately increased and kept at 20-25C during the day.

(2) Water and Fertilizer Management Sunlight Greenhouse The spring celery planting water is adequately watered, and there is no need to water the seedling water.