Two measures to prevent yellowing of the leaves or poor external environmental conditions will lead to yellowing of the crop leaves. In general, the leaf yellowing caused by nutrient factors is a physiological disease caused by lack of certain nutrients: one is the yellowing of leaves caused by iron deficiency in plants. Peanut also often suffers from iron deficiency symptoms. The veins in the upper new leaves turn yellow and the veins remain green. The iron deficiency in peach trees is characterized by yellowing of the upper new leaves, gradually yellow-white, while the old leaves remain green. In the event of such symptoms, Golden Spike should be promptly sprayed to promote the growth-promoting spirit, which can reduce or eliminate the symptoms.
The other is the yellowing of leaves caused by plant nitrogen deficiency. The first feature is the chlorosis of the old leaves in the lower part of the plant. For example, the nitrogen deficiency in wheat shows short dwarfing, short and narrow leaves, and the first yellow leaves in the lower part. The lack of nitrogen in maize is yellow along the midrib of the leaf, and there is a tendency that the tip of the corn grows from the tip of the leaf to the base of the leaf. When the leaf is yellow, the plants are dwarf and the leaves are thin. At this time, it is necessary to follow up the application of the golden treasure microbial fertilizer in time, and the symptoms of nitrogen deficiency can be reduced.
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