At present, more varieties of rape are widely promoted. Only in a grass-roots counties and cities, there are as many as ten or even dozens of varieties sold, and new varieties are being introduced every year. In the face of numerous rapeseed varieties, how should farmers choose?
First, choose quality rapeseed varieties. Compared with common rapeseed varieties, high-quality rapeseed has the outstanding advantages of “three highs and two lowsâ€. Farmers grow high-quality rapeseed, and the output is basically the same as that of ordinary rapeseed. However, due to more oil, good oil quality, and the addition of glutinous rice cakes to feeds and vegetables can be used as vegetables, the direct economic benefits are higher, and the comprehensive benefits are significantly higher than ordinary. Rape is generally valued at more than 300 yuan per mu.
Second, choose the kind of planted species. It is best for the average farmer to choose a rape variety that has already been tried and performed well in the local area, or to select a rape variety that has been tested, validated (or certified) by the local agricultural authority. Uncultivated new varieties can be planted in small quantities and expanded in size steadily, and must not be planted in blind areas.
Third, select the appropriate species based on local climate conditions. The climatic conditions vary greatly from region to region, so special attention should be paid when selecting high quality rape varieties. Long-growing rapeseed varieties can only be planted in areas with low altitudes and high accumulated temperatures; rapeseed varieties with shorter growing periods, although they can be planted in low-altitude areas, are prematurely ripened and yields are low. So it's best to plant in high altitude areas.
Fourth, select the appropriate variety based on the mouth and planting methods. If the plants are planted in the way of transplanting seedlings before transplanting, it is better to choose rapeseed varieties with long growing period, low branching position, high yield potential per plant, and high yield; on the contrary, if the former planting is delayed and the live cultivation is adopted, Shorter crops, compact plant types, and earlier-maturing varieties relying on population growth should be selected. In addition, paddy field if the spring and summer at the turn of the water are tight, need to pluck early, early transplanting pods, should also choose mature rape varieties earlier. It is necessary to pay special attention to the fact that rape varieties with strong spring nature should not be planted too early in the fall, otherwise they will cause rape blossoms from the year before and severely freeze in winter.
Fifth, select varieties based on the purpose of planting. If you just want to harvest rapeseed, you can select the general rapeseed varieties. To harvest vegetables, choose a variety that grows stronger in the autumn, grows early, grows thick, and has strong branching ability from the base after burping. In addition, in order to reduce the number of years before the application of drugs, to ensure the quality of dishes, to do "a vegetable and dual-use" cultivation of high quality rapeseed, we should also pay attention to the selection of pest resistance and strong, autumn diseases and fewer varieties.
Sixth, according to the cultivation conditions and the occurrence of pests and diseases, select suitable varieties. Some pests and diseases of rape are relatively heavy and require high planting environment and cultivation techniques. Therefore, when choosing rapeseed varieties, farmers should pay attention to the specific conditions and species characteristics. For example, for rape varieties with higher water and fertilizer requirements, it is not suitable to plant in fields with poor water and fertilizer conditions; rape varieties with poor ability in antibacterial and nuclear diseases are not suitable for severe sclerotia, damp and heavy crops that occur year-round. Planting; Boron-sensitive rapeseed varieties should not be planted on dry slopes where the soil is seriously deficient in boron or prone to boron deficiency.
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