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“肥料是植物的粮食”。花生的一生中,需要吸收大量的营养物质,才能正常的生长和发育。根据初步研究结果,花生对氮、磷、钾三要素的吸收量,在亩产300—500斤荚果的范围内,需氮素20—35斤,磷素4—6斤,钾素11—21斤。这些养料相当于100—170斤硫酸铵,22—30斤过磷酸钙,24—43斤硫酸钾,也相当于6000—10000斤的优质圈粪。上述养料的来源,除大部分氮素是由花生自身根瘤菌供给外,其他养料主要是通过根系从土壤中吸取的。为了获取花生高产必须增施肥料,以满足花生对营养的需要。现在着重谈谈花生的吸肥特点和追肥的效果。
“Fertilizer is plant food.” Peanut’s life, you need to absorb a large number of nutrients in order to normal growth and development. According to preliminary results, the amount of nitrogen, phosphorus and potassium absorbed by peanut in the range of 300-500 kg of pod per mu requires 20-35 kg of nitrogen, 4-6 kg of phosphorus and 11-21 of potassium jin. These nutrients equivalent to 100-170 kg of ammonium sulfate, 22-30 kg of superphosphate, 24-43 kg of potassium sulfate, also equivalent to 6000-10000 jin of quality latrines. The source of the above nutrients, except most of the nitrogen is supplied by the peanut’s own rhizobium, the other nutrients are mainly taken from the soil through the root system. In order to obtain high yield of peanuts, fertilizer must be added to meet the nutritional needs of peanuts. Now focus on talking about peanut absorption characteristics and top dressing effect.