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为确保大白菜“无公害”生产,播种时应掌握以下技术。 1 清洁田园和整地。选择排灌方便、前茬收获早、没种过十字花科作物的田块种植大白菜。及早清洁田园,将枯枝烂叶杂草等带出田外作高温堆肥处理。清园后立即深翻、晒垡,以消灭部分地下害虫和病原菌,并及时平整土地做畦备用。 2 施足有机肥。667m~2施充分腐熟的有机肥5吨以上作底肥(其中2/3在翻地前施入,另1/3在做畦时施入)。切忌施用未腐熟的有机肥,以免发热烧根和招地蛆伤根。 3 栽培方式的选择。地下水位高、土
To ensure that cabbage “pollution-free” production, planting should grasp the following techniques. 1 clean the garden and site preparation. Choose convenient irrigation and drainage, early harvest before the crop, not planted cruciferous crops plots of Chinese cabbage. As soon as possible to clean the garden, the litter of rotten weeds and other out of the field for high temperature composting. After the clearing garden deep plowing, sunning, in order to eliminate some underground pests and pathogens, and timely leveling the land to do spare. 2 Shi enough organic fertilizer. 667m ~ 2 Shi full maturity of organic fertilizer for more than 5 tons of base fertilizer (of which 2/3 before the turn in, while the other 1/3 in the Shi Shi Shi into). Avoid using uncompounded organic fertilizer, so as not to heat the root and attract maggots root injury. 3 cultivation methods of choice. Groundwater level is high, soil