Review on Continuous Cropping Obstacle in Vegetables in Protected Cultivation

The continuous cropping obstacle of vegetable crops is an important problem in vegetable production, even stronger in vegetables in protected cultivation . A lot of research results showed that the main causes of continuous cropping obstacle are soil environment and biological diversificatio, salinization of soil, allelophathic substance etc.Many research results showed that the continuous cropping obstacle could be resolved completely or partly by means of crop rotation, intercrop, bio-control, using resistant varieties, grafting, and organic fertilizer etc.