On the Soil Borne Deseases and the Avoiding Methods

Studies on the engineering problems of soil sickness in greenhouse production (3)

Abstract

1) It is found that one of the causes of the soil sickness unknown until now is soil borne diseases.
2) The ways of avoiding these diseases consists in flooding treatment, chemical sterilization, and steam sterilization.
3) As a result of technical analysis, the following conditions must be considered: 1) efficiency of the treatment, 2) term of the trearment, 3) costs of the treatment.
4) On the other hand, the commercial conditions are analyzed, then it is found that the cropping system and the shipping system must be taken into consideration in choosing these ways.