What fertilizer to apply to rapeseed can produce high yields How to weed in rapeseed fields

What fertilizer to apply to rapeseed can produce high yields How to weed in rapeseed fields

Rapeseed plants are tall and require a lot of fertilizer, so a reasonable application of sufficient basal fertilizer is the key to high yield of rapeseed. Today we will talk about what kind of fertilizer can be applied to plant rapeseed for high yield, for reference.

What kind of fertilizer can be applied to plant rapeseed to produce high yield

Rapeseed is a crop that requires a large amount of fertilizer. During the seedling stage, topdressing urea and ammonium bicarbonate should be applied per mu depending on the seedling stage; during wintering, generally 3000-4000 kg of soil and miscellaneous fertilizer and 20 kg of compound fertilizer should be applied per mu. , in order to increase the temperature in the soil to ensure safe wintering of rapeseed.

In the flowering and pod stage of rape, if de-fertilized plants are found, the mosaic fertilizer should be applied in time. It can be diluted with 1 kg of compound fertilizer and 100 kg of water and sprayed, or a mixed solution of low concentration urea and potassium dihydrogen phosphate can be used. to spray.

When to fertilize rapeseed

1. The pre-fertilization of rapeseed seedlings is applied when the seedlings are set or when there are 5 true leaves. Generally, 5-6 kg of urea is applied per mu. In soils lacking phosphorus and potassium, if the base fertilizer does not apply phosphorus and potassium fertilizers, supplementary phosphorus and potassium fertilizers should be applied.

2. The top dressing of rapeseed seedlings in the later stage should be determined according to the situation of the seedlings and the climate. Generally, 8-10 kg of high nitrogen compound fertilizer is applied per mu. Varieties with strong spring or areas with warm winters are better for early application, and winter temperature is low or three-ripening rapeseed areas can be applied late.

3. The rapeseed sedge stage is the concurrent period of vegetative growth and reproductive growth. The plant quickly bolts, grows branches, increases leaf area, and flower buds differentiate in large numbers. This time is a period when more fertilizer is needed, and it is also a key period for increasing branches and pods. At the same time, according to the application of base fertilizer and seedling fertilizer and the growth situation, sedge fertilizer should be applied steadily as appropriate. Generally, in the middle stage of rapeseed bolting, when the height of the sedge is 15-30 cm, apply 15-20 kg of high nitrogen compound fertilizer per mu.