Cover shade net skills to master

Coverage time should not be too long

The role of shading nets is to shave and cool down. In the absence of strong light and low temperature, shading nets cannot always [sleep" on sheds. Uncovering the shade nets requires a flexible grasp of the light intensity and temperature requirements according to the weather conditions, types of vegetables, and different growth periods of vegetables. Generally sunny cover, cloudy exposing; noon cover, sooner or later, exposing; pre-covered, late exposing. If there is more rainy weather and the temperature is not too high, after the vegetable is planted, the Shade Net can only be covered in the mild seedling period. If a black shading net is used, it will be covered only in the sunny midday. Sunshade Net cover for a long time will affect the photosynthesis of vegetables and is not conducive to the normal results of vegetables. Therefore, shade nets should be covered only in the brightest part of the sunny day at noon. The specific time is from 10:30 am to 2:30 pm. If these measures are still difficult to reduce the temperature inside the shed, you can use spray or irrigation methods to cool down. In addition, spray 0.1% zinc sulfate or copper sulfate solution can enhance the plant's resistance to heat, anti-cracking, anti-sunburn ability.

Sunshade net and isolation film isolation

The shade net clings to the shed film, first, the heat that it absorbs is very easy to spread to the shed film and then spread to the shed. It can't play well the effect of the shade net to reduce the temperature of the shed. Second, the heat can not be distributed, increasing the temperature of the light-blockage net itself will accelerate the aging of the shade net. Therefore, when the vegetable growers cover the shade nets, they should put two winter soil-clad soil bags every 120cm on the bamboo poles. The front of the shed can be placed on the discarded grass curtains every 180-300cm. The purpose is to make the shade. The net is isolated from the shed film. In addition, the soil bag should not be placed on the shed film, so that the shed film will sink downwards, and it will not be able to support the shade net.