Rape flowering management techniques

At present, the cultivation of rapeseed in Guangtong Town has entered the flowering stage. The technical staff of the Agricultural Technology Center has gone to the plots of villages to check the growth of rapeseeds and formulate management plans for each village according to the actual production situation.

The first is the scientific application of pest control. The main anti-sclerotia and aphids. In the early flowering period of rapeseed, it is necessary to fully carry out prevention and control of sclerotinia. Generally, 50 ml of 25% chlorpheniramine EC or 40% sclerotium net WP is used per mu, and the entire plant is sprayed with 50-75 kg of water. Spray as much as possible to the lower part of the rape stem in order to improve control efficiency. Heavy-field interventions are again controlled 5-7 days apart. Conditions should actively promote the use of drones or large mechanical sprays to improve the effectiveness of spraying and operating efficiency and reduce the cost of prevention and control. After spring, the temperature rises rapidly, and rape locusts are susceptible to outbreaks. Measures should be taken to prevent them in time. 10-20 grams of 10% imidacloprid per acre can be used, and 50 kg of water can be sprayed for prevention and treatment.

The second is spraying fertilizer to prevent premature aging. In the flowering period of rapeseed, combined with the prevention and treatment of Sclerotinia sclerotiorum, foliar spray fertilizer can prolong the functional period of photosynthetic organs, promote the conversion and operation of sugar, increase the number of pods, increase the number of grains, and increase grain weight. Foliar spray fertilizer is generally dominated by phosphate fertilizer, potash fertilizer, and boron fertilizer, but it is also necessary to spray nitrogen fertilizer on fields with poor growth and premature aging trends. Generally, 100-150 grams of potassium dihydrogen phosphate, 150-200 grams of urea, 50-100 grams of available boron fertilizer, and 50-75 kilograms of uniform water are sprayed per acre. Spray enough moisture to fully moisten the foliage.

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