In order to explore field application effect of reductive soil disinfestation(RSD)method,a plas tic greenhouse soil of 30 years’ continuous cropping in Xinxiang of Henan Province was selected as the research object,and one RSD treatment plastic greenhouse(adding organic matter 19 500 kg/ha) and a control greenhouse(CK,without adding any treatment),in which the RSD treatment plastic greenhouse was set with two areas of “RSD treatment” and “RSD+968 bio-bacterial fertilizer”,the changes of soil physical and chemical properties and biological properties after RSD treatment were measured,and the
growth,early yield and occurrence of diseases and insect pests of tomato or cucumber were investigated and counted for three consecutive crops.The results showed that compared with CK,Fusarium oxysporum number of RSD treatment decreased 98.95%,and the number of root-knot nematodes per 100 g dry soil decreased from 3 297.33 to 41.00.Compared with CK,RSD treatment could promote the growth and strengthen the first autumn tomato and the second spring cucumber,RSD treatment and RSD+968 treatment increased the first autumn tomato first fruit cluster yield by 73.30% and 109.59% respectively,and increased three fruit yield of second stubble spring cucumber by 7.14% and 21.43% respectively. Compared with CK,the disease rate of stem base rot of RSD and RSD+968 treatments of first stubble autumn tomato reduced by 28.64% and 40.41% in plastic greenhouse respectively,and the control effect on rootknot nematode in first stubble autumn tomato was 91.11% and 100% respectively.Meanwhile,RSD treatment greatly delayed occurrence of Fusarium wilt of second stubble spring cucumber in the plastic greenhouse.The disease rate of cucumber fusarium wilt was 100% in CK greenhouse,whereas the disease rate of cucumber fusarium wilt of RSD and RSD+968 treatments were only 10.61% and 3.82% respectively.In additoin,the disease rate of stem base rot in the third cropping autumn tomato with RSD treatments was 57.84% lower than that of CK,and the control effect of RSD treatments on root-knot nematode was still
87. 10%. It can be seen that RSD treatment has long-term effectiveness and RSD+968 treatments have additive
effect. Therefore,the RSD treatment of solid organic materials can significantly improve soil quality,reduce disease rate and increase yield of continuous cropping system in plastic greenhouse.This is an effective measure to alleviate the continuous cropping obstacle of vegetable cultivation and realize sustainable cropping.