In early spring, the temperature is low, the light is weak, and the climate is hot and cold. As a result, the growth of vegetables in some greenhouses in early spring is weakened, the nutrition is insufficient, the leaves are yellow, and the pests and diseases are more, which affects the yield and quality of vegetables and fruits. Therefore, it is necessary to take active management measures in time to ensure the normal growth of greenhouse vegetables. Here are ten tips to improve the yield and quality of greenhouse vegetables.

First, double layer coverage

Cover the mulch or add a small arch shed in the greenhouse. Covering the mulch can increase the soil temperature of the soil surface by 2 °C, and adding a small arch can keep the temperature of the vegetable growing environment above 15 °C.

Second, garden soil disinfection

Each square meter of bed soil is treated with 3 - 5 grams of carbendazim or methyl bromide to kill pathogenic bacteria in the soil and prevent soil-borne diseases.

Third, improve the film mode

Replace the bamboo raft and bamboo frame film with iron wire, and replace the bamboo raft with plastic rope as the climbing object, which can reduce the shading degree and improve the photosynthetic efficiency.

Fourth, improve irrigation methods

The drip irrigation or submerged drenching method can replace the traditional flooding, which can reduce the relative humidity of the air in the shed by more than 10%.

Fifth, the choice of no drip film

This planting will not condense water droplets, and the light transmittance can reach 98% or more. If a general shed film is used, it can be applied to the shed film or the daily cleaning can be carried out to eliminate water droplets on the film and enhance the light.

Six, sprinkle ash

In the greenhouse, the hay ash is often sprinkled, which can inhibit the occurrence of diseases such as rickets and blight, and promote the healthy growth of vegetables.

Seven, increase carbon dioxide

The burning of biogas in the shed not only increases the temperature of the shed, but also supplements the carbon dioxide gas.

Eight, set the reflective screen

A reflective screen is arranged on the back wall of the shed, and the lower end is perpendicular to the ground, which can enhance the light in the weak light area and increase the ground temperature of 2 ° C - 3 ° C.

Nine, application of growth regulators

Proper use of exogenous plant growth hormone can promote plant growth and prevent falling flowers and fruit.

Ten, ingenious application

The application method of dust, smoke and the like has no defects of increasing the humidity of the spray application method, and is simple and easy, and the medicine effect is stable and long-lasting.

The above are the ten tips for improving the yield and quality of greenhouse vegetables. It is best to cultivate vegetables in the shed indoors with a temperature of 15-23 °C during the daytime. The maximum temperature should not exceed 25 °C, and the temperature should be less than 5 °C at night.

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