Soil-borne diseases caused by repeated cropping. These diseases are particularly severe in old sheds that have been planted for more than three years, especially in the middle and late stages of withering, root rot, and ulcers, including greening.
To find the cause of these diseases:
First: the soil aggregate structure is damaged, salinization, acid-base imbalance, moss red soil, including white saline-alkali.
Second: the soil flora is out of balance, beneficial bacteria are reduced, and harmful bacteria are increased.
Third: The autotoxicity of plants. During the growth process, plants will emit their own unwanted substances through the root system, but the plants will not move. With the accumulation of such substances, these substances will cause toxic effects on the root system.
So we know the problem, how can we solve it?
1. Reasons for salinization and salinity
There is currently no solution to the salt in manure. The biggest problem with manure is that it cannot be desalted. Chemical fertilizers, including a large number of elements, are inorganic salts that cannot be absorbed by plants and exist in the land, which will exacerbate the occurrence of salinization. For this reason, try to avoid using manure with too high salt content.