Rape fertilization must be rationally applied according to the fertility characteristics of the rapeseed, nutritional characteristics and the need for fertilizer laws. Rape fertilization can generally be divided into three parts: base fertilizer, top dressing and seed fertilizer. Basal fertilizer refers to the compound fertilizer applied to the farmland before sowing or transplanting; the fertilizer applied after emergence or transplanting is collectively referred to as top dressing.
In the life of rapeseed, the general principle of fertilization is to apply basic fertilizer, apply early Miaofei, reapply wax and manure, and skillfully apply fertilizer. Basal fertilizer should account for 60% of the total fertilizer and topdressing should account for 40% of the total fertilizer. Dong Zhuang is the basis for high yield of rapeseed, and spring hair is the key to high yield. Winter strong spring is both economical and stable. According to a survey conducted by the China Oil Crops Research Institute, the number of green leaves in rapeseed plants in winter is positively correlated with the number of branches per year and the yield per plant. Within the range of 4 to 11 leaves, the number of green leaves per plant per year was increased. After the year, the number of branches per plant can increase by 0.6-0.7, and the yield per plant can increase by 1, 6-2 grams. If the actual harvest is 150,000 plants per hectare, it will increase the yield by 282.5 kg per hectare, which is enough to apply the base fertilizer to rape and promote the importance of winter rapeseed rape to increase yield. The importance of promoting winter rapeseed rape to increase yield is not applied to the base fertilizer. For the basal fertilizer that is not applied, or the application amount of basal fertilizer can not meet the requirement of rapeseed fertilizer, the color of the leaf is faded, and there are obvious defertilized fields to add wax fertilizer, generally urea 45-60 kg, or ammonium bicarbonate is applied. 112.5-150 kg. Fertilizer is the most critical fertilizer in the life of rapeseed. The application time of barley fertilizer is generally applied from the bud to the start of elongation of barnyardgrass, and the yield is high.
In summary, in the current large-scale rapeseed production, to make high yield and stable production of rape, fertilizer application should pay attention to organic and inorganic fertilizers, nitrogen, phosphorus, potassium and trace elements. Inorganic fertilizers should be widely promoted long-term compound fertilizers, long-acting compound fertilizers with long-acting ammonium bicarbonate, ammonium phosphate, potassium sulfate and boron fertilizers for the parent fertilizer is applied as a base fertilizer on rapeseed once, and will not be applied again later. Fertilizer and wax fertilizer have achieved significant yield increase benefits. According to the trial results of the Shandan County Agricultural Technology Extension Station in Gansu Province, the long-acting compound fertilizer used as a base fertilizer has a one-time application yield of up to 5,250 kg of hectares, which is more than 15% higher than the conventional fertilization method.
In the life of rapeseed, the general principle of fertilization is to apply basic fertilizer, apply early Miaofei, reapply wax and manure, and skillfully apply fertilizer. Basal fertilizer should account for 60% of the total fertilizer and topdressing should account for 40% of the total fertilizer. Dong Zhuang is the basis for high yield of rapeseed, and spring hair is the key to high yield. Winter strong spring is both economical and stable. According to a survey conducted by the China Oil Crops Research Institute, the number of green leaves in rapeseed plants in winter is positively correlated with the number of branches per year and the yield per plant. Within the range of 4 to 11 leaves, the number of green leaves per plant per year was increased. After the year, the number of branches per plant can increase by 0.6-0.7, and the yield per plant can increase by 1, 6-2 grams. If the actual harvest is 150,000 plants per hectare, it will increase the yield by 282.5 kg per hectare, which is enough to apply the base fertilizer to rape and promote the importance of winter rapeseed rape to increase yield. The importance of promoting winter rapeseed rape to increase yield is not applied to the base fertilizer. For the basal fertilizer that is not applied, or the application amount of basal fertilizer can not meet the requirement of rapeseed fertilizer, the color of the leaf is faded, and there are obvious defertilized fields to add wax fertilizer, generally urea 45-60 kg, or ammonium bicarbonate is applied. 112.5-150 kg. Fertilizer is the most critical fertilizer in the life of rapeseed. The application time of barley fertilizer is generally applied from the bud to the start of elongation of barnyardgrass, and the yield is high.
In summary, in the current large-scale rapeseed production, to make high yield and stable production of rape, fertilizer application should pay attention to organic and inorganic fertilizers, nitrogen, phosphorus, potassium and trace elements. Inorganic fertilizers should be widely promoted long-term compound fertilizers, long-acting compound fertilizers with long-acting ammonium bicarbonate, ammonium phosphate, potassium sulfate and boron fertilizers for the parent fertilizer is applied as a base fertilizer on rapeseed once, and will not be applied again later. Fertilizer and wax fertilizer have achieved significant yield increase benefits. According to the trial results of the Shandan County Agricultural Technology Extension Station in Gansu Province, the long-acting compound fertilizer used as a base fertilizer has a one-time application yield of up to 5,250 kg of hectares, which is more than 15% higher than the conventional fertilization method.