Several benefits of leaf spray

1. Insufficient root fertilization
When the root fertilization of crops is inconvenient, for example, in the late period of crop growth, the root vigor declines and the ability to absorb fertilizer decreases.Or when the adverse soil environment for crop growth, such as too much water, drought, soil acid, alkali, crop root resorption is blocked, and crop growth, and need to quickly recover if with root method can't meet the needs of the crop in time, only by adopting spraying on the leaf, can quickly replenish nutrition, meet the needs of crop growth and development.
2. Replenish nutrition quickly
In the process of crop growth, crops have shown some deficiency of nutrients. As it takes a certain time for nutrients to be absorbed by crops to be absorbed by soil fertilization, the deficiency of nutrients in crops cannot be alleviated in a timely manner.At this time, leaf fertilization can make nutrients enter the plant quickly through the leaves to solve the problem of lack of nutrients.
3. Give full play to the fat effect
Some fertilizers, such as phosphorus, iron, manganese, copper and zinc, are easy to be fixed by the soil if they are applied as roots, which affects the application effect.For another example, some fruit trees and other deep-rooted crops have less absorption of certain nutrients. If the traditional fertilization method is adopted, it is difficult to apply to the root absorption site, nor can it give full play to its fertility effect.
4. Economic benefits
Various trace elements are essential nutrients in the growth and development of crops, but the application amount is very small, such as molybdenum fertilizer, the application amount per mu is only dozens of grams, if root application method, it is not easy to evenly apply.Only by spraying the leaf surface can we achieve economic efficiency.According to the research calculation, the utilization rate of boron in general crops is 8.18 times higher than that of basal crops when boron fertilizer is sprayed on the leaf surface.In terms of economic benefit, leaf spraying is more cost-effective than root spraying.
5. Reduce soil pollution
Large amounts of nitrogen fertilizer applied to soil can easily lead to the accumulation of nitrate in groundwater and vegetables, causing harm to human health.About 75 percent of the nitrate absorbed by humans comes from vegetables. If leaf fertilization is adopted, soil fertilization can be reduced appropriately, which can reduce nitrate content in plants and residual mineral nitrogen in soil.In salinized soil, soil fertilization may increase the concentration of soil solution and increase soil salinization.Leaf fertilization can not only save the amount of fertilizer applied, but also reduce the pollution of soil and water.