Autumn Rainy Ceiling Dishes Grasping "Two Defenses"

November 02, 2023

In recent days, continuous rainy weather has caused a certain impact on vegetable production. Many greenhouse vegetables have symptoms such as leggy and frequent bacterial diseases, which reduces the yield and quality of vegetables. So, what problems need to be paid attention to in vegetable management in the current continuous rainy weather?

An excessively high humidity prevents dehumidification and cooling. In addition to increasing the air outlets commonly used by vegetable farmers, and setting sun screens or spraying cooling agents, laying organic materials such as rice husk, rice straw, or crushed straw is a very important issue for growers. Effective humidity cooling method. This is because the laying of these organic materials is like laying a layer of “mats” on the ground. This can reduce the amount of heat absorbed by the soil and reduce the storage of heat in the shed. It can have a good effect on the cooling of the shed, and more importantly, laying. The organic matter such as rice husk, rice straw, or crushed straw has the function of absorbing moisture and moisture, that is, absorbing the humidity in the air and reducing the amount of soil evaporation, thereby achieving the purpose of cooling and dehumidification.

Rainwater entering the shed The front of the solar greenhouse is the main passage for rainwater into the shed. Therefore, the front face must be drained in advance to prevent rainwater from flowing into the shed. For deeper sheds under the front face, attention should be paid to protection. The wall at the front face. It can be repaired with earth before the onset of the rainy season, or it can be made of bricks. In addition, the entrances and exits of the sheds are set on the back wall. It is recommended that the growers set one or two steps at the entrances and exits to prevent rainwater from flowing into the sheds through the entrances and exits. The vents on both sides of the arch shelter are also the channels for the rain to “sneak in”. The vegetable farmer can set up a rain film at the vent to prevent the rain from entering the shed.

Remind farmers to pay attention to the fact that if rainwater enters the shed, the first thing the vegetable farmer needs to do is to discharge the accumulated water out of the shed, and then paddle when the soil is semi-dry and semi-wet to loosen the soil and increase the soil permeability. Rooting phenomenon and the occurrence of various soil-borne diseases.

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