Can rapeseed cake be fertilized directly?

Rapeseed cake can not be fertilized directly, it needs to be mixed with water and fermented for 3 months to ensure that it can be used as fertilizer after fermentation is ripe, and attention should be paid to the frequent application of thin fertilizer, if it is not fermented and mature, it is easy to produce high temperature in the process of fermentation decomposition and burn the roots of crops.

I. the use of rapeseed cake fertilizer

1. Rapeseed cake fertilizer can be used to improve the soil. Rapeseed cake is a by-product of rapeseed oil extraction. It contains about 1% phosphorus and more than 35% protein amino acids. It is a good organic fertilizer.

2. If the rapeseed cake is to be used as fertilizer, you first need to crush the rapeseed cake, grind it into powder as much as possible, and mix the rapeseed cake with water in the proportion of 1:7 water, or immerse the rapeseed cake with water. Be sure to mix the rapeseed cake and water well when mixing.

3. After the rapeseed cake is mixed with water, it usually takes about three months. When the fermented soil turns black, the rapeseed cake no longer grows white hair, and the rapeseed cake is no longer smelly and tasteless, it proves that the fertilizer has been fermented.

4. When using rapeseed cake as fertilizer, the general principle is to apply thin fertilizer frequently and not to fertilize too much at one time.

5. In addition, the unfermented cake fertilizer should not be used directly, because the rapeseed cake fertilizer is a hot fertilizer, which will produce high temperature in the process of fermentation decomposition, which is easy to burn the crop roots around the rapeseed cake.

6. in use, misunderstandings should be avoided as far as possible, so as not to cause damage to plant roots.

2. fertilizer characteristics of rapeseed cake after fermentation

1. Rapeseed cake fertilizer itself contains a large number of enzymes, which can directly increase soil enzymes when applied to the soil, and the organic matter in the soil is the matrix of enzymatic action.

2. The application of rapeseed cake in soil can increase the activity of many kinds of enzymes in soil, increase the number of microorganisms beneficial to root growth, and inhibit many kinds of soil-borne diseases such as continuous cropping disease and Fusarium wilt to some extent.

3. The organic content of rapeseed cake weight is 60% Mel 70%, which can effectively improve the level of soil organic matter, increase the content of soil organic matter, enhance the ability of soil water and fertilizer conservation, promote the transformation and absorption of nitrogen, phosphorus, potassium and trace elements in soil, and improve the soil environment.

4. Rapeseed cake is green and environmentally friendly, and the fermented rapeseed cake organic fertilizer does not have any side effects, which can improve soil safety and fertilizer use efficiency, and save production costs.

5. In addition, the fat content of rapeseed cake is relatively high, and it needs to be decomposed in the soil for a period of time to be absorbed by crops. Therefore, the fertilizer efficiency of rapeseed cake fertilizer is relatively long.

Third, why rapeseed cake needs fermentation

1. Rapeseed cake contains a lot of fiber, and direct fertilization will produce a lot of heat energy, which will cause root burning or seed burning, so it must be fermented before use.

2. If the rapeseed cake is not fermented or the fermentation is incomplete, it may cause the secondary fermentation of rapeseed cake in the soil, resulting in the problems of burning seedlings and low germination rate.