Introduction to foliar fertilizer

Foliar fertilizer refers to the fertilizer that directly applies the nutrients required by crops to the foliar surface to make up for the lack of nutrients absorbed by plant roots

Characteristics of foliar fertilizer

Advantages

First, the absorption of foliar fertilizer is fast. All kinds of nutrients enter the plant directly from the leaves and can be absorbed by the plant quickly

Second, foliar fertilizer has a strong effect. Foliar fertilizer is easily absorbed by plants, which can quickly alleviate the lack of fertilizer in crops, promote the progress of various physiological processes in plants and improve the quality of plants

Third, the amount of foliar fertilizer is less and the cost is low. Foliar fertilizer is sprayed directly on the foliar surface, which is more economical than root fertilization

Shortcomings

First, the leaf with thick cutin has low penetration rate and less absorption of nutrients

Second, foliar fertilization is easy to drip from the foliar, and the sprayed nutrients are easy to be lost by rain

Third, the spraying liquid dries quickly on the leaf surface, affecting the absorption of plants

Fourth, nutrients such as calcium are difficult to transfer from the absorption part to other parts

Fifth, the nutrients provided by foliar fertilizer can not meet all the needs of plant growth

Sixth, improper use of foliar fertilizer is easy to cause plant foliar burns

Seventh, foliar fertilizer has short fertilizer effect time and needs to be sprayed many times, which is time-consuming and laborious

Precautions for the use of foliar fertilizer

On the basis of root fertilization, foliar fertilizer should select appropriate spraying concentration, spraying method, spraying time and spraying time, so as to give full play to the effect of foliar fertilizer< span>