Fertilizer special for soybean

Abstract

The present invention relates to a special-purpose fertilizer for soyabean. It is characterized by that it comprises nitrogen, phosphorus and potassium, also includes additive with slow-releasing action and special-purpose microfertilizer. The weight percentage of nitrogen, phosphorus and potassium is 0.4-1:0.1-0.3:0.2-0.4. Said invention is complete in nutrients and reasonable in formula, can fully meet nutrient requirement for soyabean growth and development process, also contains the nutrient components of nitrate nitrogen, sulfate radical, boron and molybdenum, so that it is favorable for soyabean nitrogen-fixing root nodule.

Description

technical field [0001] The invention relates to a special fertilizer, in particular to a special fertilizer for soybeans. Background technique [0002] Soybean is an annual herbaceous plant belonging to the family Fabaceae. According to the light sensitivity and temperature sensitivity among varieties, as well as different farming systems and sowing dates, they can be divided into four types: spring soybean, summer soybean, autumn soybean and winter soybean. Soybean is an important grain and oil crop, and is famous all over the world for its high oil content and good quality. Soybean grains contain 42% protein, 20% fat, and 30% to 33% sugar. Its protein content is 2 to 4 times higher than that of wheat, corn, rice and other grains, and it contains 8 kinds of essential amino acids, and is rich in vitamin A and vitamin D. It has high nutritional value and is known as "vegetarian meat". Bean crops are commonly planted in my country, both in the north and the south, especiall...

AI Technical Summary

Problems solved by technology

[0027] 2. Phosphorus-deficient soybeans are deficient in phosphorus, and various metabolic processes are inhibited, plant growth is retarded, leaf cells are stunted, and the degree of cell size reduction is greater than the degree of chlorophyll reduction, so that the chlorophyll density is relatively increased, and the leaf color is dark green or gray-green. Later, there will be chlorosis between the veins of the lower leaves, and finally the veins will be chlorotic and die

This is the root cause of the serious impact on yield

[0029] 4. Molybdenum deficiency Soybeans lack molybdenum, poor growth and development, short plants, lack of chlorosis between leaf veins, or twisted leaves, poor development of root nodules, small number, small size, reduced nitrogenase activity, and reduced nitrogen fixation

[0030] 5. When boron-deficient soybeans are deficient in boron, the growth is slow, the leaf color is light, the leaf surface is uneven, the root system is poorly developed, the root nodules are not only underdeveloped, and even lose the ability to fix nitrogen. Death, affecting the number of flowering pods and pollen formation and fertilization