Experts from the Provincial Soil and Fertilizer Terminal believe that according to the target yield of rapeseed, the amount of fertilizer is also different. For areas with a target yield of 200 kg/mu or more, the total amount of fertilization per acre (refined) is: 12–14 kg of nitrogen fertilizer, 4–6 kg of phosphate fertilizer, 7–9 kg of potash, 1 kg/mu of borax; target production 100–200 The total amount of fertilization per acre in the kilogram/mu area is as follows: 10-12 kg of nitrogen fertilizer, 3-5 kg ​​of phosphate fertilizer, 5-7 kg of potassium fertilizer, 0.75-1 kg of borax, and the target output of 100 kg/mu or less. The total amount of fertilization per acre (decontamination) is: 7-9 kg of nitrogen fertilizer, 3-4 kg of phosphate fertilizer, 4-5 kg ​​of potassium fertilizer, and 0.5-0.75 kg of borax.

When fertilizing, master four key technical points:

Apply base fertilizer. Basal fertilizer mainly organic fertilizer, supplemented by chemical fertilizers. Generally 1000-1500 kilograms per mu farmyard fertilizer, rapeseed special fertilizer or general-purpose compound fertilizer 25-30 kg plus 0.5-1 kg of boron. Combining ploughing and soil preparation, the farm manure, compound fertilizer (or formula fertilizer) and boron fertilizer should be ploughed into 20-30 cm plowing layer. It is important to remember that the fertilization is too shallow so as to avoid deferment of the later stage of rapeseed.

Early Miao Miao. The application amount is 5-6 kg per mu of urea. If the basal fertilizer is not applied with phosphorus and potash fertilizer, the high-nitrogen ternary compound fertilizer or the rapeseed special formula fertilizer can be applied to an acre of 8-10 kg per mu. The application period is generally applied at the time of seedling setting or when five true leaves are used. The strong spring varieties or the warmer winter season should be applied early, and the low winter temperatures can be appropriately applied at night. Use general spatula. In late November, it is possible to combine topdressing with topsoil and topdressing with wax fertilizer, spreading 50–100 kilograms of straw ash or stalks per acre, which will serve as a water storage, warming and anti-freeze effect.

Stable application of fertilizer. The base and seedlings are sufficient, the plants grow robustly, and less or no fertilizer is applied; the base fertilizer and seedling fertilizer are insufficient; there is a trend of defertilization that should be applied early to apply fertilizer, generally high-nitrogen compound fertilizer or rapeseed special fertilizer is applied per acre. - 20 kg. The application period is generally applied in the middle of convulsions and 15-30 centimeters in height; when the growth is strong, it can be applied in the later stage of convulsions and 30-50 centimeters in height, so as to prevent the closure of canopy during the flowering period. The method of application should be applied in an appropriate manner. It cannot be applied in the morning when the dew is not dry.

Qiao applied fertilizer. For the strong growing season, the fertilizing amount in the flood season may not be applied or applied less; for the early maturing varieties, it may not be applied, or may be less applied in the initial flowering period. The application method and quantity, rape top dressing can be foliar spraying, spraying 0.1% -0.2% urea or 0.2% potassium dihydrogen phosphate solution 50 kg per mu in flowering and scab. In addition, spray 0.2% borax aqueous solution once in the post-emergence stage and convulsive stage can prevent the phenomenon of "flowering but not real" and increase the yield.

Fire Door Monitoring System

Fire Door Monitoring System,Fire Door Monitoring Interface,Fire Door System Interface,Fire Door Control Interface

LIAONING YINGKOU TIANCHENG FIRE PROTECTION EQUIPMENT CO.,LTD , https://www.tcfiretech.com