First, the purple seedlings
Seedling leaves, sheaths from green to red, and finally purple, 3 leaf stage began to appear symptoms, 4-5 leaf stage prominent, obvious symptoms, root undeveloped, small stems, slow growth, leaves from green to purple, and finally withered. The main reasons for the occurrence of purple seedlings are as follows: First, the soil is deficient in phosphorus; carbohydrate metabolism is hindered; excess anthocyanins are accumulated in the leaves to form anthocyanins; purple leaves become purple; second, low temperature occurs; Root absorption capacity decreased, chlorophyll synthesis was blocked, resulting in the leaves from green to purple; Third, due to low-lying terrain, the water by the rake or the ground panel, resulting in poorly developed root system of maize, resulting in corn seedlings redness or fever. Purple seedlings appear on the ground at low temperatures, stickiness, compaction, and poor drainage. Purple seedlings can cause corn stalks and baldness, affecting yield and reducing quality. Prevention method is to increase phosphate fertilizer calcium, increase ground temperature, generally Mushi 40-50 kilograms of superphosphate and fermented organic fertilizer as base fertilizer, to improve the soil permeability in time, and do a good job of drainage, deep relaxation, Digging shovels, etc., to promote the endothermic heat of the soil, a certain role in the prevention and treatment of corn purple seedlings, once the emergence of purple seedlings, can be 0.2% potassium dihydrogen phosphate, foliar spray 2-3 times.
Second, the red seedlings
When the corn grows 3-4 leaves, it is often found that the third leaf from the base of the young stem (and also from the fourth leaf) turns red. The color change starts from the edge of the tip of the leaf and gradually expands to the majority of the leaf, showing a purple color. If the growth conditions do not improve, it will also extend to the lower leaves and new leaves until 7-8 leaves, and 9 leaves in severe cases. Some of the leaves are red, and some are only part of the red leaves. In severe cases, purple leaves appear in the sheaths and stems. For this purple-red plant at the seedling stage, the masses call it a "red seedling." The problem of short-term "red seedlings" is not large. If "red seedlings" takes too long, it will seriously reduce production. Red seedlings can cause dwarf plants, lower leaf chlorophyll content, and lower root activity. Causes of "red seedlings" are mainly due to insufficient supply of nitrogen and phosphorus nutrients, low temperature and improper cultivation and management measures (such as overlying the soil too shallow). The prevention and control of red seedlings must be topdressed with N and P fertilizers at the 5 to 6 leaf stage of maize to rapidly improve soil nutrient status. In addition, we should also establish a good farming system to avoid planting corn in cold and low-lying fields. The quality of the site preparation, the appropriate depth of planting, proper fertilization methods, and the improvement of viscous heavy soils are all measures to control red seedlings.
Vitamins are a type of trace organic substances that humans and animals must obtain from food in order to maintain normal physiological functions. They play an important role in human growth, metabolism and development. Vitamins do not participate in the formation of human cells in the body, nor do they provide energy for the human body. Vitamins are a class of organic compounds necessary for maintaining good health.
Our company provides group A vitamins, group B vitamins, B12, etc.
Vitamin Tablet,Food Grade Vitamin,Vitamins For Energy,Water Soluble Vitamins
XI AN RHINE BIOLOGICAL TECHNOLOGY CO.,LTD , https://www.rhinebioteches.com