What nutrients do soybeans need for growth and development?
Soybean needs a large number of nutrients and many kinds of nutrients. if the same yield is formed, the nitrogen required by soybean is 4-5 times more than that of cereal crops, and the main nutrient types are nitrogen, phosphorus and potassium. The second is calcium, magnesium, sulfur, magnesium, boron, molybdenum, manganese, zinc, copper and other nine trace elements.
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Trace elements needed for soybean growth and their application
The normal growth of soybean needs some trace elements, among which molybdenum, boron, zinc, manganese and so on are more important. Molybdenum is a component of nitrogenase in soybean nodules and an indispensable component in the normal life activities of nitrogen-fixing bacteria. Boron is also very important in the life activities of soybeans, such as poor root development, poor nodule growth and loss of nitrogen fixation ability. Therefore, attention must also be paid to trace elements. Can the trace elements needed for soybeans be satisfied from the soil? It depends on the abundance and deficiency of trace elements in the soil and the state of the environment. Such as low-lying or non-drainage
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Temperature requirements for the growth and development of soybean
Soybean is a temperature-loving crop. The accumulated temperature of soybean varieties in Heilongjiang Province is about 1800 ℃. The main results are as follows: (1) the optimum temperature for seed germination is 18 ℃ 20 ℃, at which time the germination is fast and the seedling is uniform; the lowest temperature is 6 ℃ 8 mol, but it is very slow; when the temperature reaches 33 ℃, the germination is the fastest, but the seedling is weak. (2) the lowest temperature needed for seedling emergence is 8 Mel 10 ℃. (3) it is suitable for flower bud differentiation to be 21 ℃ 23 min. It is suitable for 22 ℃ to blossom. The temperature is too high or too low to blossom less. (4) suitable for root growth.
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