Vegetable greenhouse planting knowledge, these seven points you must know!

First, why do we need enough light?

Light is the driving force of photosynthesis in vegetables. The longer the light time, the higher the efficiency of photosynthesis, the more organic matter produced, and the longer the light time of vegetables, which is conducive to improving the yield and quality of vegetables. As soon as the sun comes out in the northern winter, open the quilt or straw mat to increase the light, and cover the quilt or straw mat after the sun goes down.

Second, why greenhouse vegetables to change temperature management?

1, the temperature directly affects the growth and development of vegetables, promote metabolism.

2, due to the difference in early, middle and late temperature, greenhouse vegetables can also use the temperature difference in different time periods to change the temperature treatment, purposefully adjust the growth of vegetables.

3, you can scientifically and reasonably control the temperature changes at different times to promote the growth of greenhouse vegetables by covering the shed film, covering the quilt and letting out the air.

Third, why do we advocate drip irrigation or underfilm watering?

1. Drip irrigation or under membrane watering can effectively avoid water evaporation, avoid high humidity in the greenhouse air, and prevent the breeding of germs.

2, drip irrigation or membrane watering precautions: watch the day watering, watering small water.

3, winter watering can not flood irrigation, the first time to pour small water or drip irrigation, the second film watering, can effectively reduce the evaporation of water into the air, control the humidity in the greenhouse, reduce the incidence of disease.

Fourth, why can't the surface soil be moved to the back wall soil when building greenhouses?

Because the surface soil permeability is poor, the soil fertilizer nutrients contained are not much, it is difficult to be absorbed by the root system, and it is easy to lead to slow growth of vegetable plants, yellow leaves and so on.

Five, why should vegetables be applied to the bottom fertilizer?

1, vegetables in the growth process will need a variety of fertilizer nutrients, especially after flowering.

2, the base fertilizer can supply the nutritional needs of the whole growth process of vegetables.

3, the base fertilizer is conducive to the growth of vegetable roots, so that vegetable plants grow more robust.

Why must fully decomposed farm manure be used?

1, not fully decomposed farm manure will not only cause vegetable plants to burn roots, but also cause roots to stop growing or rot.

2, not fully decomposed farm manure has a large number of harmful substances, not conducive to plant growth, easy to lead to wilt, verticillium wilt, nematode, root maggot and other diseases.

3, fully decomposed farm fertilizer can not only effectively control pests and diseases, but also promote plant growth, improve yield and quality.

Seven, why do you open the quilt in rainy weather?

Although there is no direct sunlight in rainy weather, there is still scattered light, and uncovering the quilt can also allow vegetables to photosynthesize.