1. Main types and characteristics of magnesium fertilizers

Magnesium sulfate: a white crystalline substance that is readily soluble in water at room temperature, with a magnesium content of approximately... 9.7%, easily absorbed by crops, is one of the most commonly used magnesium fertilizers and can be applied as basal fertilizer, topdressing, or foliar spray.

Magnesium nitrate: Magnesium nitrate for agricultural use Fat is A white powder or crystalline substance that is readily soluble in water at room temperature, with a magnesium content of approximately... 16.5%, easily absorbed by crops, and can provide two nutrients—magnesium and nitrogen. It is primarily used for basal application, topdressing, and foliar spraying.

Calcium-magnesium-phosphate fertilizer: A pale green or grayish-white powder that is poorly soluble in water, with a magnesium content of approximately... 10%, one of the earliest magnesium fertilizers used in China, is primarily applied as a basal fertilizer and can be used to increase soil acidity.

2. Magnesium nitrate for agricultural use middle The role of magnesium

Magnesium is a secondary element in crops. ， During the growth stage, it is primarily found in the young shoots and leaves of crops; during the maturation stage, it is mainly present in fruits and seeds. Magnesium nitrate for agricultural use Fat The main impacts on crops are:

Magnesium nitrate for agricultural use In the fat Magnesium is a component of chlorophyll in plant cells; it promotes chlorophyll formation and enhances the accumulation of photosynthetic nutrients. ；

It can promote the activity of functional enzymes in crop plants, regulate physiological functions, and enhance the resistance of crops. ；

It can promote the synthesis and accumulation of proteins and fats in crops and increase the nutritional content of agricultural products. ；

It can increase the thickness of crop cell walls and prevent pathogen invasion. Wait.

3 The harms of magnesium deficiency in crops

Poaceae ： Grasses are not highly sensitive to magnesium, but magnesium deficiency in the field is severe, affecting crops. will The leaves turn yellow while the veins remain unchanged. 、 Reduced number of mature capillary roots 、 Drying of mature grains 、 Production decline Waiting conditions 。

Leguminosae ： Leguminous crops are highly sensitive to magnesium and readily exhibit symptoms of magnesium deficiency. When leguminous crops suffer from magnesium deficiency, the mesophyll cells of older leaves initially turn yellow; in severe cases, brown spots appear on the leaves, eventually leading to wilting. During the maturation stage, this deficiency results in reduced yields, lower protein and oil content in the seeds, and a decline in overall nutritional value. ， Magnesium nitrate for agricultural use It is essential to use. 。

Eggplant fruit type Eggplant, a fruiting crop, is highly sensitive to magnesium. Missing usage Magnesium nitrate for agricultural use time Old leaves of the plant often develop yellow spots, which then become tightly adherent, leading to abnormal growth of the stamens and reducing the pollination rate. During the maturation stage, this results in deformed eggplants, a decline in nutritional content, and a reduction in the commercial value of the fruits. In plants left for seed production, magnesium deficiency causes seeds to dry out, resulting in low germination rates.

Other crops Fruit trees such as apples, jujubes, and pears in northern regions are also showing symptoms of magnesium deficiency. The symptoms primarily appear on the leaves, and in severe cases, they can significantly affect both the yield and quality of the crops. Additionally, cotton is another crop that is sensitive to magnesium; if agricultural applications use magnesium nitrate... Use If there is insufficient nutrition, the mesophyll of the leaves will turn red, and the yield decline becomes noticeable.