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赤豆在我市县郊习惯零星种植,常年亩产仅100斤左右,为了探索高产途径,近两年来我所进行了赤豆高产栽培技术的研究。赤豆高产条件赤豆高产是肥、水、光、热、气五个因素相互协调的结果。根据两年高产试验田及辅助试验总结归纳如下:(一)高产与施肥关系:赤豆是需肥较多的作物。据有关资料记载,每生产100斤籽粒及其根、茎、叶、荚壳大约需吸收氮素6.6斤,比小麦、玉米多1.2倍。需磷1.6斤,比小麦多0.8倍。需钾2.5斤。尽管赤豆有根瘤菌能固氮,但仅能供它所需氮素总量的40%左右。
Red bean in the suburbs of our city habitually scattered planting, perennial annual output of only about 100 pounds, in order to explore high-yielding ways, the past two years I conducted a red bean high yield cultivation techniques. Red bean high yield conditions Red bean high yield is the result of the coordination of five factors of fertilizer, water, light, heat and gas. According to two years of high yield test field and auxiliary test are summarized as follows: (A) the relationship between high yield and fertilization: red bean is more fertilizer to be crop. According to the data records, each production of 100 kg of grain and its roots, stems and leaves, pod shell about absorption of nitrogen 6.6 kg, 1.2 times more than wheat, corn. Need phosphorus 1.6 kg, 0.8 times more than wheat. Potassium 2.5 kg. Although rhizobium can fix nitrogen, it can only supply about 40% of the total amount of nitrogen needed by it.