Transplanting rapeseed field management technology

Seedling transplanting can not only solve the problem of convulsions and overwintering, but also help to increase rapeseed yield. This cultivation method has been widely used in my hometown in recent years, accounting for more than 50% of the total. Its management techniques are as follows: 1. Post-planting seedling management 1. Early application of live tree fertilizer. After the rapeseed is transplanted, 1500-2000 kilograms of human excrement and urea or 3-5 kilograms of urea per acre is applied to the water 5-7 days after transplanting. The roots and soils will be blended in order to facilitate the early return to Qingzhuang. 2, early loose soil, diligent tillage weeding. The rapeseed should be cultivated in time to loosen the soil in order to remove loose weeds, remove weeds, raise the temperature, reach the purpose of aeration and weed control, promote stable root system, and early frost resistance. For example, there are more weeds in the field and the cultivator cannot be completely removed. Herbicides such as glyphosate and diterpene can be used for chemical weeding. 3, drought prevention. Autumn drought is severe, soil moisture is small, it is necessary to fight against drought and drought, but avoid flooding. Autumn rain should pay more attention to anti-staining, timely opening "three ditch" drainage, to ensure smooth flow, no water in the field. 4, pay attention to pest control. The pests that affect the growth of rapeseed in autumn and winter are mainly aphids, cabbage caterpillars, diamondback moth and rape virus diseases. Especially in autumn and winter, rainfall in Huaining County is often less, drought is more conducive to the occurrence of aphids. The locusts will spread virus diseases at the same time, so we must pay special attention to prevention and treatment. 40% of Dimethoate EC, Qujingjing, Dagong Chen etc. can be used for pharmaceuticals with remarkable results. 5, Pu Shi fat. Wax fertilizer is generally dominated by organic fertilizer, applied in mid-December, about 1,000 kg per acre, 3-5 kg ​​of urea per acre poor seedlings can be used. The wax fertilizer has a warmth and antifreeze effect. If it is applied in the spring, it can not only make the rape grow more than the long leaves in the wintering period, but also can promote early-onset springtime. 6, strengthen antifreeze measures. During the severe winter season, when the temperature drops to -5°C to -3°C, freezing of roots and leaves of rape can cause seedling death. For rapeseed fields that have been planted early, have a strong tendency and have a tendency to grow in size, they can use 15% of paclobutrazol WP 50-60 grams per acre around December 20, and add 75 kg of water evenly to spray the leaves, which can be effectively prevented. Or reduce frost damage. In addition, canola seedlings can be covered with soil fertilizer, grass ash, and crop stalks before winter, which can also play a role in wind and frost protection. Second, the bud stage management 1, reapply fertilizer. "Spring vegetables are as fierce as tigers". When the temperature reaches 10°C in the spring, rapeseeds are gradually convulsed. The bud stage is the period in which rape grows fastest, has the most vigorous life activities and needs large nutrients. Feifei should be re-applied before and after the beginning of spring. When the alfalfa is 10-15 cm high, 8-10 kg of urea or 1000-1500 kg of urea and 3-5 kg ​​of urea can be applied per mu. The specific amount of fertilizer can be increased or decreased according to weather and seedling conditions. For high-quality double-low hybrid rapeseed or base-boron-deficient rapeseed, spraying 0.2-5% borax aqueous solution 50-75 kg per mu during this period is beneficial to growth. 2. Do a good job of irrigation and drainage. A certain amount of water is required during the rape convulsions. In case of drought, half of the ditch water should be filled in the ditch to maintain the humidity in the field. However, in the Huaining region, there is more rain after the spring, which often results in a high soil water level in the field, which is not conducive to the expansion of the root system. Therefore, attention should be paid to the prevention of waterlogging and drainage damage. 3, to prevent cold and winter frost damage. Rape after encountering 0 °C low temperature after twitching, buds easily fall off by freezing, and even death. To scientific fertilization, pay attention to the application of a reasonable formula of N, P, K, and more organic fertilizer to enhance resistance. If the buds are frozen, they can choose sunny and warm weather, use the knife to cut off the frozen stems, chase a small amount of available fertilizer, and promote branching to compensate for the damage caused by freezing. Third, flower angle management 1, Qiao applied fertilizer. Fertilizer is a fertilizer used for absorption and utilization of flowering canola flower nodes, and it has the effect of increasing pods and grain weight. The use of fertilization must be properly applied. For the rape field with less application of manure, lack of spring, and declining growth, it is appropriate to apply about 5 kg of urea per mu, and for the application of fertilizer, it can be used to spray 1-2% of phosphate from the roots. The potassium dihydrogen solution 50-75 kg is suitable. 2, make-up spray boron fertilizer. In recent years, high-quality hybrid rapeseed has been continuously expanded in the area of ​​local cultivation, and the "flowering obstruction" caused by boron deficiency has occurred from time to time. Therefore, it is advisable to spray 50-75 kg of 0.2% borax solution per acre on sunny evenings in the early days of bog-deficient fields. 3, Qinggou reduced waterlogging. "Spring water is the disease of rapeseed." Although the rape flower needs a large amount of water, it is not as good as rain. Spring rains and high soil water levels often cause premature failure of rapeseed, and the high humidity in the field is conducive to the spread of germs, which makes the rape seriously and plants lodging. Therefore, at this time, it is necessary to regularly clean the ditch between the ditch, to ensure that there is water in the field, and the rain stops. 4, to strengthen the prevention and control of pests and diseases. In the middle and late stages of rapeseed, there are mainly pests and diseases such as aphids, downy mildew, and sclerotia. Focus on Sclerotinia and artificially remove diseased leaf and old leaves at flowering stage; use 40% carbendazim 100 g/mu or 25% prochloraz phosphate 60 ml/water 75 kg water to spray on the lower leaves and stems from the flowering stage to the flowering stage. 1-2 times. In the outbreak of downy mildew, 65% of zein zinc wettable powder 150 grams per acre was used to control 75 kg of water. 5, timely harvest. "80% of rapeseed yellow, 10% of the collection," generally in 25-30 days after the final flowering, 2/3 of the pods appear yellow, yellow and green when the branches appear 1/3 timely harvest.

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