First, management to enhance fertilizer management Spring cabbage during the growth period of early low temperature, late high temperature, and the opposite is the autumn cultivation, in the fertilizer and water management should pay special attention. Fertilizer is mainly composed of urea, human waste, and other available fertilizers, which are combined with water for flushing. Generally, fertilizer is applied 1-2 times, and urea 15-20 kg per mu or perishable farmhouse urine fertilizer is 500 kg. Second, pest control Spring cabbage generally fewer diseases and insect pests, some varieties not resistant to downy mildew susceptible to dry leaves in the middle and late, can be sprayed with DuPont Kelu 800-1000 times liquid prevention. Soft rot occurs easily in the late ball stage and can be cultivated with sorghum to avoid water accumulation in the field. Some plots are more prone to insect pests, available chlorpyrifos, insecticidal single, insecticidal double, fipronil, avermectin, Bt, diazinon, imidacloprid and other agents alternating spray. The sooner the early harvest of spring cabbage is harvested, the greater the risk of bolting. Care should be taken to observe the elongation of the shortened stem. Harvest it as soon as possible before bolting or light bolting but without affecting food quality.
Double Dome Halogen Operating Lamp very matured in our products series, maintainance rate is very low;the surgical lamp has perfect cold light effect; this type ot lamp has excellent lighting depth can be 1200mm;it also has excellent color temperature control;The Halogen operation lamp adopt streamline lamp body design; halogenoperating lamp with reflector system designed in CAD; color temperature close to that of sunlight; making the tissue surface visible under natural color; depth of tubular light beams up to over 1200mm; uniform illumination effectively eliminating shadows under any circumstance
Double Dome Halogen Operating Lamp
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Shandong Lewin Medical Equipment Co., Ltd. , http://www.lewinmed.com