1. Topdressing and hydrating. Winter rapeseed enters the bud period shortly after returning to green, and the height of glutinous rice grows by 2 to 3 centimeters per day. It is an important period for setting up high-yield shelves. At this time, it should be combined with rainfall to apply fertilizer in time to make rapeseed grow fast and not prematurely decay. The foundation of multi-pod and high yield is laid. In the future, the field that has to be topdressed in the future will be chased in time. It is not suitable to use urea at this time. Because of its long fertilizer effect, it is easy to lead to late maturity and should be applied with 10 kg/mu of ammonium bicarbonate. The fertile land with good land and good growth, the topdressing should be applied slowly; the fertilizer in the seedling stage is insufficient, and the rapeseed with weak growth should be applied early.
2. Do a good job in clearing the ditch, so that the rain stops the field, promotes root growth, increases the absorption capacity of the root system, and also eliminates the knot and reduces the evaporation and preservation of water.
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