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国内外都有红浮萍可以肥田的报导,如越南民主共和国早有培养红浮萍作稻田肥料的习惯;国内浙江温州专区农民培养红浮萍有一百多年的历史.四川有二、三千万亩冬水田,一年只种一季,产量只是三百斤至五百斤左右,低产的原因与肥料不足有关.为了迅速提高这些水稻田的肥力,我们调查了冬水田红浮萍自然生长情况,进一步研究了红浮萍的生育和固氮率.现将结果论述于下.
Red duckweed can be reported both at home and abroad. For example, the Democratic Republic of Vietnam has long had the habit of cultivating red duckweed as a fertilizer for paddy field. The farmers in the Wenzhou area in Zhejiang Province have a history of over one hundred years. There are two or three Ten thousand acres of winter paddy fields, only a quarter of a year, the output is only three hundred pounds to about 500 pounds, the reason for low yield and lack of fertilizer.In order to rapidly improve the fertility of these paddy fields, we investigated the natural growth of winter paddy field duckweed Situation, further study of the red duckweed fertility and nitrogen fixation rate.The results are discussed below.