The best way to disinfect vegetable soil: a simple and effective way to disinfect the soil before planting vegetables

How to disinfect the land before planting vegetables

The best way to disinfect vegetable soil is to expose it to the sun. This method has the best sterilization effect in hot summer and sunny weather. The key is that this method of disinfection and sterilization is simple and labor-saving, and will not harm the soil and crops, killing two birds with one stone.

How to disinfect vegetable soil by sun exposure

1. Exposure method

First, use a piece of black plastic film, then spread the soil on it. Spread the soil evenly and expose it to the sun.

And you should turn the soil frequently to kill the germs, eggs and insects in the soil. Generally, continuous exposure to the sun for 2 to 3 days can complete the sterilization and insecticide of the soil.

2. Principle of sun exposure disinfection

  The use of black plastic film during exposure to the sun is mainly to increase the ability to absorb heat. This can generate higher temperatures, thereby better killing germs and insect eggs.

In addition, turning the soil frequently can clear out various hidden weeds and allow the soil to be heated evenly.

In the past, we have always used slash-and-burn farming to describe traditional agriculture. But of course, this is also because turning the soil over allows the underlying soil to be exposed to sunlight, killing pests and diseases, not to mention burning .

Unfavorable factors of soil exposure for vegetable growing

1. Affected by weather

Exposure to the sun is greatly affected by the weather, the effect is unstable, and the disinfection cycle is long. Under normal circumstances, 6 to 8 weeks of exposure to the sun can be effective for most soil-borne diseases. When the temperature is low and the weather is uncertain, this cycle will be extended to 3 months .

2. Environmental pollution

Although the burning method is economical and effective for growers, it is prohibited by laws and regulations to burn crop straw for soil disinfection due to environmental pollution and hidden dangers in production safety. Replacing crop straw with other fuels also cannot avoid the issue of cost.