How to prevent weak seedlings when raising rape seedlings?

How to prevent weak seedlings when raising rape seedlings? Please guide rape because of its small seeds and high emergence rate, it is easy to appear large sowing rate, dense emergence, crowded seedlings, deterioration of nutrition, poor growth and high weak feet of seedlings in the later stage. After transplanting to the field, such rape seedlings have poor stress resistance, slow turning green, many dead seedlings, easy lodging in the later stage and low yield. One of the main reasons for the emergence of such weak seedlings is that the sowing amount is too large and the seedlings are too dense, so that the seedlings grow excessively and produce weak seedlings. Rape should do a good job of sowing seeds to prevent the emergence of weak seedlings. The ratio of seedbed area to field area is generally controlled at about 1:5, that is, the seedbed area per mu of field should be about 0.2mu (two parts of land). The seeding amount per mu of seedling bed is generally controlled at about 0.5 kg, that is, only 0.1 kg (100 g) of seeds need to be purchased per mu of field. In the actual sowing, the sowing amount can be adjusted according to the specific conditions, such as small seeds, early sowing, high bud rate, high soil preparation quality, suitable soil moisture, fine management, less insect pests in the seedling stage, and less sowing, otherwise, it should be sowed a little more. however, the sowing amount per mu of seedling bed should not exceed 0.6 kg. Second, and time seedlings in order to ensure uniform sowing, seeds should be mixed with sifted fine soil and spread evenly. In addition, the 3-leaf stage of rape after emergence should also be combined with weeding seedlings to ensure that the seedlings are evenly distributed and the leaves are not matched with leaves. Only on this basis can we strengthen the management in order to cultivate strong seedlings and lay a good foundation for rape high yield in the future. Click to get more rape planting techniques click to get more food crop planting techniques