The legumes mainly include cowpea, kidney bean, lentil, edamame, etc. It is crucial to obtain high quality, high yield, and high efficiency in the production of legumes and vegetables. 1. Definite the characteristics of fertilizer requirements and set fertilizers as required. The straight roots of legumes are well developed, with nodules of different shapes being symbiosis, having a nitrogen-fixing function, which can fix nitrogen in the air and soil for self-interest, and the requirements for soil nutrients are not very strict, but they are also high in demand. The demand for vegetables and vegetables, especially for phosphorus and potassium, is greater. Production promotes stable application of basal fertilizer, generally based on the soil fertility status, per acre (1 acre) on the basis of quality decomposed organic fertilizer 2000 to 2500 kilograms, based on bean special vegetable fertilizer 25 to 35 kilograms. However, care should be taken not to use unripe organic fertilizer as a basal fertilizer, otherwise it will lead to bad seeds and affect the yield and quality. 2, grasp the key period of fertilizer, sub-fertilizer. Pay attention to the application of seed fertilizer, bean sprouts soon after sowing flower bud differentiation, into the development period, application of fertilizer can ensure early development needs, generally apply 4 to 5 grams per mu of three-element compound fertilizer, pay attention to separate fertilizer. Rhizobium in the seedling stage is weak in nitrogen fixation. Appropriate topdressing can promote early seedling emergence. It can apply 8 to 10 kg of special fertilizer for beans per 667 square meters. Flowering and podling period is the period of vegetative growth and reproductive growth. It requires large amount of fertilizer. It can apply 20 dry grams of special fertilizer for every 667 square meters of soybeans to make flower topdressing to reduce the loss of calyx and increase fertilizer stamina to achieve enhanced fruiting. And prevent premature aging. The application method promotes ditching along the side of the root to reduce the loss and increase the fertilizer utilization. 3, master two fertilization principles. Mainly organic fertilizer, supplemented by chemical fertilizers; basal fertilizer mainly supplemented by topdressing, pay attention to foliar fertilizer.
The combination and collocation of mineral nutrient elements. Among these elements, in addition to carbon, oxygen, hydrogen, nitrogen and other elements mainly exist in the form of organic matter, the other 60 kinds of elements are collectively referred to as minerals, of which 25 kinds are necessary for human nutrition.Calcium, magnesium, potassium, sodium, phosphorus, sulfur, chlorine 7 kinds of element content is more, accounting for about 60% ~ 80% of the total minerals, so called macro elements, and iron, copper, iodine, zinc, manganese, molybdenum, cobalt, chromium, tin and vanadium, silicon, nickel, fluorine, etc. 14, because there are too few, within the body content less than 0. 005%, therefore is called the trace elements.
Synonyms Dietary essential minerals; Macro- and microminerals; Electrolytes; Trace elements Definition Mineral nutrients are inorganic substances that must be ingested and absorbed in adequate amounts to satisfy a wide variety of essential metabolic and/or structural functions in the body. Mineral nutrients are sometimes categorized according to the amount required in the human diet to maintain good nutrition. Macrominerals is a general term encompassing both bulk minerals (calcium, phosphorus, magnesium) and electrolytes (sodium, potassium, chloride), which are required to be ingested by humans in amounts of hundreds of milligrams to several grams per day. Microminerals or trace elements (including iron, zinc, copper, manganese, selenium , iodine, chromium, molybdenum) are required in amounts of a few milligrams or less per day. The latter members of this group, which are required only in amounts of micrograms per day, are sometimes referred to as ultratrace elements.
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