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目前,我国在红萍研究及其应用上处于国际领先地位。全国已有26省、市、自治区养用红萍,萍种已由羽叶萍(中国萍)向细绿萍、卡洲萍、墨西哥萍,尼罗萍多萍种发展。红萍的固氮、富钾、放氢、高产的生物学特性,决定了红萍应用的广泛性,红萍的应用系列有着“四农四料两化两品的十二个应用系列。一、提供养分红萍叶腔内有鱼腥藻共生,可以固氮,鲜萍含氮0.25—0.30％,亩施3,000斤相当于37—45斤硫酸铵。红萍还能从含钾浓度很低的天然水中富集钾,吸钾强度比水稻高10倍,为水稻提供肥源。同时,也可做旱田绿肥,是“稻田肥料厂”。在目前农肥大量流失,化肥利用率不高的情况下,引进农业弃水红萍生物工程,固定流失肥分,将是一个不用机械、能源投资的“肥料工业”。二、改良土壤鲜萍有机质含量为2.0—2.5％,每亩压4,000斤鲜萍,可转化
At present, China is in the leading position in research and application of Hongping. The country has 26 provinces, municipalities and autonomous regions to raise red duckweed, Ping species has been Yu Ping (China Ping) to the fine green Ping, card Chaoping, Mexico Ping, Nile more development. Hongping’s nitrogen fixation, potassium, hydrogen release, high yield of biological characteristics, determines the wide application of red duckweed, red duck’s application has a series of “four four four materials and two products of the twelve application series.” First, Provide nutrition Red anabaena within the Anabaena symbionts can be nitrogen fixation, fresh duck nitrogen 0.25-0.30%, 3,000 kg of muster equivalent to 37-45 kg of ammonium sulfate. Hongping also from low concentrations of potassium natural Potassium enrichment in water, potassium absorption intensity 10 times higher than rice, to provide fertilizers for rice.At the same time, can also be dry green manure, is “paddy fertilizer plant.” In the current large loss of fertilizer, fertilizer utilization is not high, The introduction of agricultural waste water red duckweed biological engineering, fixed loss of fat, will be a no mechanical, energy investment, “fertilizer industry.” Second, improve soil fresh organic matter content of 2.0-2.5%, 4,000 pounds per acre Xianping Ping, Can be transformed