Greenhouse pepper cultivation technology

In the cultivation of peppers in solar greenhouses, the most headaches are the problems of no seedlings, dead trees or wilting after the peppers are planted. What are these reasons and how can they be prevented?

1. Field symptoms

Wilting plants appear in the field after peppers are planted. The main manifestations are long time to slow seedlings; weak plants; yellow leaves; wilting on sunny days. The reasons are mainly the following:

1. Planting is too deep. Some farmers may take into account the need for watering after planting, afraid that the water will overwhelm the seedlings, and almost one third of the stalks are buried in the soil. Due to the high temperature and high humidity, the stalks become brown. Even rot, but this is not a disease and cannot be prevented by spraying.

2. The adaptation process of seedlings. Because the seedlings have adapted to the soil environment of the seedbed before planting, because the soil has been changed after planting, there must be a certain time to adapt to the soil environment in the arch shed, which results in a longer time for slow seedling.

3, the planting time is too early, causing the root phenomenon. Because most vegetable farmers did not adopt ridge planting, and most of them adopted flood irrigation, the air permeability was not good, which caused the roots. When the wilted seedlings are pulled out, it can be clearly seen that some of the capillary roots have been necrotic, and the remaining root system is not enough to maintain the nutrients and water needed for its normal growth. On sunny days, the temperature is high, the plant transpiration is large, and the required water is large, so it will wither.

4. Root burning caused by improper use of farm manure. The application of high-quality agricultural fertilizers in the greenhouse is the basis of high-quality and high-yield vegetables, and it is also the most effective measure to prevent and alleviate the obstacles of continuous cropping of soil in the greenhouse. However, the application of unfermented agricultural fertilizers, or the application of agricultural fertilizers into the ground in small chunks, or the application of agricultural fertilizers, or excessive application of agricultural fertilizers, will cause high temperatures around the root system during decomposition, or the concentration of the soil solution will be too high. Ask for water to burn the main root, which affects root development and wilting.

Preventive measures

Regarding how to solve the problem of too deep planting, the field management technology can be improved, and some small tools are used to dig around the seedlings, so that the stems buried in the soil are exposed to the soil. Properly increase soil permeability to avoid rotten stalks and cause dead trees.

3. In order to effectively solve the problem of "fertility", we must pay attention to the following four points:

1. Fully rotten. The farm manure must be fully decomposed and harmless before entering the greenhouse. It is strictly prohibited to enter the shed into the ground. When composting, the humidity should be closed, sealed off, and turned over. This will kill germs, eggs, grass seeds, and reduce the harm of pests.

2. Thin and sifted. Rotten agricultural fertilizers should be thin and sieved, otherwise it will cause burns on new roots just after planting. The lighter ones will affect the development and cause “small old seedlings”, and the severer ones will wither and even die.

3. Deep application. After applying the fertilizer, be sure to dig deep and mix well.

4. Appropriate amount of fertilizer. The amount of agricultural fertilizer is not as much as possible, and excessive application is also prone to root burning problems.

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