Soybean main nutrient elements function and demand
2020-05-02 14:21:26
1. Nitrogen. Nitrogen is the raw material for soybeans to form new organs and produce grain proteins, and it is involved in the process of protein synthesis and is a determinant factor in high yield.
(1) Nitrogen deficiency. When soybeans are deficient in nitrogen, the appearance is slow, the branches are reduced, the plants are short and the old leaves turn yellow first. Yellowed leaves, such as timely application of nitrogen fertilizer, restore normal green.
(2) Source. One-fourth to two-thirds of the nitrogen needed for soybeans is obtained from the symbiotic nitrogen fixation of Rhizobium. In order to obtain high yields, the supply of rhizobia alone is not enough, and the rest needs to be obtained from the soil.
(3) Demand. When the hydrolyzable nitrogen content is more than 5 mg per 100 g of soil, the effect of nitrogen production increase is not significant; at around 3 mg, nitrogen production significantly increases production.
2. phosphorus. Phosphorus is also necessary for soybeans to form new organs and produce grain proteins, and participates in protein synthesis processes. Phosphorus is required for soybean fat synthesis and decomposition. Phosphorus plays an important role in the transformation and transportation of organic matter in soybean plants and promotes the development of early maturing and root nodules.
(1) Phosphorus deficiency. The early phosphorus deficiency of soybean plants resulted in dark green leaves, followed by chlorosis between the veins of the bottom leaves, and finally the veins also showed a lack of green. After flowering, there were brown spots on the leaves. When the phosphorus was severely deficient, the stems turned red and the roots were brown.
(2) Source. The application of phosphate fertilizer in all kinds of soil has the effect of increasing production, but the fertilizer effect is closely related to the basis of soil fertility and the application methods.
(3) Demand. Generally, when there is more than 6 mg of available phosphorus per 100 g of soil, the effect of phosphorus production increase is small; when it contains 1 to 2 mg, the yield increase is significant.
3. Potassium. Potassium is related to the operation of carbohydrates and has a special effect on stomatal opening. Deficiency of potassium in plants delays the maturation of soybeans and reduces the quality of grains. Potassium is highly mobile and can easily migrate from older tissues to the point of growth of roots and shoots.
(1) Potassium deficiency. When the soybean lacks potassium, there is no plastic macula in the edge of the lower leaves of the plant. The center part of the leaf is still dark, and the yellow part of the leaf tip and the leaf margin gradually develop inwards. The veins of the leaf are bulging and shrinking, and the leaf front is downward. Curly, it eventually turns brown and dies.
(2) Demand. When the effective potassium content is less than 5 mg per 100 g of soil, the application of potash fertilizer has a significant effect on yield increase.
4. calcium. Calcium plays an important role in the formation of vascular bundles, membrane substances, and carbohydrate transport. The application of calcium in acid soil can regulate the pH of the soil, promote the growth of root nodules, promote the cell division of soybean plant growth points, and accelerate the growth of young parts.
5. molybdenum. Molybdenum is a metal component of soybean nodule nitrogenase and nitrate reductase and is essential for symbiotic nitrogen fixation and nitrate reduction.
(1) Molybdenum deficiency. When soybean lacks molybdenum, the growth of root nodules and the synthesis of bean hemoglobin and amino acids are all inhibited.
(2) Demand. The demand for molybdenum from soybeans is very small, and about 300 mg of molybdenum is required for every 100 kg of soybean grain produced.
(1) Nitrogen deficiency. When soybeans are deficient in nitrogen, the appearance is slow, the branches are reduced, the plants are short and the old leaves turn yellow first. Yellowed leaves, such as timely application of nitrogen fertilizer, restore normal green.
(2) Source. One-fourth to two-thirds of the nitrogen needed for soybeans is obtained from the symbiotic nitrogen fixation of Rhizobium. In order to obtain high yields, the supply of rhizobia alone is not enough, and the rest needs to be obtained from the soil.
(3) Demand. When the hydrolyzable nitrogen content is more than 5 mg per 100 g of soil, the effect of nitrogen production increase is not significant; at around 3 mg, nitrogen production significantly increases production.
2. phosphorus. Phosphorus is also necessary for soybeans to form new organs and produce grain proteins, and participates in protein synthesis processes. Phosphorus is required for soybean fat synthesis and decomposition. Phosphorus plays an important role in the transformation and transportation of organic matter in soybean plants and promotes the development of early maturing and root nodules.
(1) Phosphorus deficiency. The early phosphorus deficiency of soybean plants resulted in dark green leaves, followed by chlorosis between the veins of the bottom leaves, and finally the veins also showed a lack of green. After flowering, there were brown spots on the leaves. When the phosphorus was severely deficient, the stems turned red and the roots were brown.
(2) Source. The application of phosphate fertilizer in all kinds of soil has the effect of increasing production, but the fertilizer effect is closely related to the basis of soil fertility and the application methods.
(3) Demand. Generally, when there is more than 6 mg of available phosphorus per 100 g of soil, the effect of phosphorus production increase is small; when it contains 1 to 2 mg, the yield increase is significant.
3. Potassium. Potassium is related to the operation of carbohydrates and has a special effect on stomatal opening. Deficiency of potassium in plants delays the maturation of soybeans and reduces the quality of grains. Potassium is highly mobile and can easily migrate from older tissues to the point of growth of roots and shoots.
(1) Potassium deficiency. When the soybean lacks potassium, there is no plastic macula in the edge of the lower leaves of the plant. The center part of the leaf is still dark, and the yellow part of the leaf tip and the leaf margin gradually develop inwards. The veins of the leaf are bulging and shrinking, and the leaf front is downward. Curly, it eventually turns brown and dies.
(2) Demand. When the effective potassium content is less than 5 mg per 100 g of soil, the application of potash fertilizer has a significant effect on yield increase.
4. calcium. Calcium plays an important role in the formation of vascular bundles, membrane substances, and carbohydrate transport. The application of calcium in acid soil can regulate the pH of the soil, promote the growth of root nodules, promote the cell division of soybean plant growth points, and accelerate the growth of young parts.
5. molybdenum. Molybdenum is a metal component of soybean nodule nitrogenase and nitrate reductase and is essential for symbiotic nitrogen fixation and nitrate reduction.
(1) Molybdenum deficiency. When soybean lacks molybdenum, the growth of root nodules and the synthesis of bean hemoglobin and amino acids are all inhibited.
(2) Demand. The demand for molybdenum from soybeans is very small, and about 300 mg of molybdenum is required for every 100 kg of soybean grain produced.
Pharmaceuticals finish product is the main product of Ningbo Voice Biochemic Co., Ltd.. The product line covers almost all the dosage forms, including tablets, capsules, small volume injections, infusions, eye/ear drops, creams and ointments, powder for injections and Aerosols. All finish products are produced in the GMP standard workshop.
Our
pharmaceutical finish products are registered in the countries of Asia,
Africa and South America under our own brand: VOICE, which is have won a
high reputation in the marketing countries. Together with our own trade
mark, the packaging of all pharmaceuticals finish products are well
designed according to the requirement of different market..
Cardiovascular Drugs,Antipyretic Analgesics,Antiviral And Antibiotics,Finished Pharmaceutical Products
NINGBO VOICE BIOCHEMIC CO. LTD , https://www.pharma-voice.com