The latest key points of foliar spraying of wheat

Wheat is widely planted all over the world, and it is one of the three major cereals. Almost all of it is used as feed. Spraying fertilizer on the leaves of wheat at the booting stage can obviously prolong the leaf function and increase the yield. Let's take a look at the main points of wheat foliar fertilizer with the editor.

1. Master the spraying time

According to the experiment, spraying fertilizer from booting to full heading stage of wheat is the best period, which can obviously increase the yield. in addition, at noon in sunny days, because of high temperature, large evaporation and low fertilizer use efficiency, it is best to choose semi-cloudy or sunny days before 10:00 or 4 p.m., spray fertilizer within 24 hours in case of rain, try to spray again after rain. Fertilizer spraying should avoid flowering stage as far as possible, so as not to affect the normal pollination and fertilization of wheat, so as to reduce the seed setting rate.

2. Determine the type of fertilizer spraying

The type and amount of fertilizer should be determined according to the seedling stage, phosphorus and potassium can promote the synthesis and transportation of wheat nutrients, speed up grain filling, and enhance the lodging resistance of plants at the same time; nitrogen fertilizer can improve grain varieties and prevent premature senescence, but too much application will lead to overgrowth of plants, which is not conducive to yield. For plants that grow or tend to grow, it is recommended to spray 0.3% potassium dihydrogen phosphate solution; for thin plants, 1%-2% urea solution can be sprayed; for plants with thick leaves and exuberant growth, plant ash extract can be sprayed. Foliar fertilizers such as American star or fulvic acid can also be sprayed.

3. Spray evenly

The spraying method should also be appropriate. The fertilizer must be sprayed completely on the leaves, green stems and wheat ears, while the front and back of the wheat leaves should be sprayed with fertilizer. When spraying, spray evenly, the finer the fog droplets, the better, for the wheat fields with heavy weight and poor soil moisture, or when dry and hot wind occurs during the fertilizer spraying period, it is necessary to increase the number of fertilizer spraying as appropriate.

4. Points for attention

First, the mixed use of fertilizers should not be too many, do not say that several kinds of foliar fertilizers should be applied together, nor should they be sprayed one way or another tomorrow. Foliar fertilizer has no cumulative effect, and more varieties will affect the effect. Generally speaking, one or two kinds of foliar fertilizer can be selected according to local conditions. The second is to choose the time to spray must grasp, which has been introduced above; third, fertilizer spraying is to dissolve fully, with the use, to avoid strong light or rain loss. Fourth, potassium dihydrogen phosphate should not be mixed with alkaline pesticides such as stone sulfur mixture and Bordeaux liquid, so as to avoid reactions to reduce fertilizer efficiency and efficacy.

The above is the introduction of wheat foliar fertilizer spraying, hope to help you, want to know more related knowledge, please follow us.