What are the methods of fertilization in mulberry fields?

In order to give full play to the role of fertilizer and reduce the loss of fertilizer, reasonable methods must be taken to apply fertilizer to the place where mulberry roots are most easily absorbed. Various fertilization methods are suitable for different fertilization periods and different fertilizer types.

① furrow application

Mulberry furrowing and fertilization are mostly used for close planting mulberry fields. The width and depth of the ditch depend on the amount and type of fertilizer, and the soil should be covered immediately after fertilization. It is best to apply organic fertilizer in the ditch.

② acupoint application

Open holes in mulberry trees or rows to fertilize. Small trees have less fertilization and small and shallow holes; A big tree has a lot of fertilizer and a big and deep hole. Immediately after fertilization, the soil should be firmly covered to prevent the volatilization and loss of fertilizer. The acupoints of fertilization should be changed every time, so that the mulberry roots in different parts can grow in balance.

3 spread.

Sprinkle fertilizer on the mulberry field and mix it into the soil in combination with cultivation. Generally used for a small amount of topdressing urea and other fertilizers.

④ Fertilization outside roots

Spraying water-soluble fertilizer on mulberry leaves is absorbed by leaves through stomata and cuticle, also called foliar fertilizer. The effect is quick, which has a certain effect on increasing the yield of spring and autumn leaves; However, due to the small amount of fertilization and short fertilizer efficiency, it is only an auxiliary means of soil fertilization in mulberry fields. Attention should be paid to external fertilization: spray it once in the morning and evening with appropriate concentration to avoid fertilizer damage. Commonly used varieties and application concentrations of exogenous fertilizers are: urea 0.2% ~ 0.5%, ammonium sulfate 0.4%, calcium superphosphate 0.5% ~ 1%, plant ash soaking solution 1%, potassium dihydrogen phosphate and potassium sulfate 0.2% ~ 0.5%. Mulberry fields lack fertilizer, and when the weather is dry, nitrogen fertilizer should be sprayed; When there are many rainy days and the maturity of mulberry leaves is poor, phosphorus and potassium fertilizer should be sprayed. The spraying amount per mu is 100 ~ 150kg, and it is sprayed continuously every 5 ~ 7 days, and the spraying times can be appropriately increased in dry season. Urea, potassium sulfate, etc. You can also mix pesticides.