Four major taboos to avoid when mulching vegetable greenhouses

Using greenhouses to grow vegetables is currently the main way to cultivate off-season vegetables, but several points need attention during the greenhouse mulching process, otherwise it may cause huge losses to vegetable production. Below, let's take a look with the editor at the four major taboos of vegetable greenhouse mulching.

1. Do not choose industrial film

Greenhouse mulching film can generally be divided into industrial film and agricultural film. In vegetable production, agricultural film must be chosen, and industrial film must never be used, because industrial film contains certain toxic substances that are harmful to the growth and development of vegetables. Agricultural film can also be divided into transparent film, black film and silver-gray film, etc. Different greenhouse films should be selected according to the season, vegetable variety and mulching purpose. For example, to increase temperature and preserve moisture, choose transparent film; to lower temperature, control weeds and preserve moisture, choose black film. To control aphids, choose silver-gray film.

2. Do not neglect water management

Many people think that plastic film mulching has a water-retaining effect, so they often neglect water management. In fact, retaining water also requires water to retain it, so before mulching with plastic film, soil moisture must be kept sufficient. This is the key to ensuring seed emergence and normal growth of seedlings. Conversely, if the soil is sticky and heavy, with relatively more water and a lack of oxygen, this is extremely unfavorable for seed germination and root growth. Such plots should be dried first, and plastic film should be applied only when the soil moisture is suitable, otherwise root rot and seedling death are very likely.

3. Never sow too early

Sowing under plastic film mulching must not be too early, because after mulching with plastic film, low temperatures are better, soil moisture is good, and seedlings emerge quickly, but late frost can easily cause freezing damage and lead to seedling death, so the sowing time must take multiple aspects into consideration. First, the seedlings' requirements for environmental conditions; second, the local frost period; third, the time from sowing to seedling emergence. Only when these three conditions are suitable should you sow before the frost and have seedlings emerge after the frost, which is conducive to increasing yield and income.

4. Do not fertilize blindly

Many farmers fertilize blindly in order to increase yield, especially by broadcasting or banding fertilizer at sowing. This not only causes fertilizer waste and increases planting costs, but may even cause seedling burn and seed rot. Some farmers believe that high yield can be obtained after plastic film mulching, so they apply less fertilizer, resulting in later nutrient deficiency and premature aging, which seriously affects yield. When applying base fertilizer, fertilizer must be applied throughout the whole layer, and the soil must be deeply turned 20-30 cm and fully mixed with the soil. Strictly prevent shallow application in the surface soil layer. The fertilization amount must be accurate, neither too much nor too little, and the organic fertilizer used must be fully decomposed.

The above is an introduction to the four major taboos of vegetable greenhouse mulching. We hope it can help you. To learn more related knowledge, please follow us.