The Research Of The Repair Effects On Continuous Cropping Soil Under Irrigation And High Temperature Tightly Greenhouse

Soil continuous cropping obstacle not only affect facilities of crops vegetative and reproductive growth, but also significantly reduces the quality of product and flavor. The technology of irrigation and high temperature tightly greenhouse is using sunlight to increase rapidly temperature of air and ground, and maintain a certain time, using high temperature disinfection to kill bacteria and weed pests in the greenhouse. It is the study for the repair effects of continuous cropping soil and the growth affects of Green pepper on the two years of watermelon and continuous three years of strawberry after irrigating high temperature tightly greenhouse. The aim is to explore the best results of the irrigation and high temperature tightly greenhouse, guide greenhouse production, find a new idea of solving problems of cropping obstacles. The results showed : 1) After irrigating high temperature tightly greenhouse, the temperature and humidity increase rapidly and the temperature of air and ground showed 60℃ or 40℃, temperature increased about 10~20℃ and maintain a certain time, so it can kill bacteria and weed pests to improve soil structure.2) After irrigating high temperature tightly greenhouse, soil microbial flora showed that bacterial and actinomycete content increased, microbial community structure of plant roots were improved and the bacteria become dominant strains which improved effectively the soil environment.3) Irrigation and high temperature tightly greenhouse play the role of leaching on continuous cropping soil, reducing the accumulation of soil salinity, improving soil properties and balance soil nutrient. 4) After irrigating high temperature tightly greenhouse, the environment of high temperature, high humidity and lack of oxygen made enzymes passivated or inactivation which showed the lowering activity on sucrose, urease, alkaline phosphatase and dehydrogenase. 5) After irrigating high temperature tightly greenhouse, the measurement results of physiological indicators and quality for Green pepper showed that the control were better than the treated in plant height, stem diameter, blade growth and fruit quality etc.It can be seen that the technology of irrigation and high temperature tightly greenhouse had a certain repair on continuous cropping soil,which can promote the growth,increase yields and fruit quality on Green pepper.