Three attention to Spring Management of rape in Dryland

Last winter and this spring, overwintering rape suffered severe and persistent drought in most parts of China, which had a very adverse impact on the normal growth and development of rape. After the Spring Festival, rape has gradually entered the vigorous growth of bud moss-the early flowering stage, and the drought in various places has not been completely relieved. In view of the growth characteristics of rape, we should pay attention to the following three points in the spring tube: 1. Boron supplementation should not be ignored. As continuous drought will greatly reduce the effectiveness of boron in the soil, crop roots can not absorb, resulting in boron deficiency in rape plants, flowers but not fruit, and seriously reduce yield, so on the basis of drought resistance and topdressing, special attention should be paid to the supplementary application of boron fertilizer, even in rape fields where boron fertilizer has been applied at the time of sowing or transplanting, foliar boron spraying is still needed at flowering stage. At the same time, Zhuangtuanling should be sprayed to improve the absorption function of all kinds of urgently needed elements in the plant and enhance the vegetative growth function of the plant. 2. Don't forget to guard against the cold when the temperature rises. With the return of spring, the temperature of rape field is about to turn green and resume its growth. But the climate is very unstable, and once the cold air strikes, it will cause freezing damage. Therefore, it is necessary to spray 800 times the liquid of new high-fat film all over the field, while preserving soil moisture and fertilizer to prevent the invasion of bacteria, it is important to prevent cold and heat preservation so as to avoid disasters. 3. Timely restrain the growth of the main shoot and promote blossom and fruit. At the beginning of turning green and jointing, Huawang No. 3 should be sprayed in time, which can promote the transformation of vegetative growth to reproductive growth function, promote flower bud differentiation, inhibit the wild growth of branches and shoots, and spray vegetable fruit Zhuangtieling at the initial flower bud stage, young pod stage and grain full stage. it can enhance the quality of pollen fertilization, strong cyclic fruit setting rate, promote fruit development, no deformity, no empty shell, no blighted grains, and effectively increase the yield.