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解放后,祖国的建设在各方面都获得了伟大的成就;渤海地区农业的发展也不例外,就拿水稻施肥的一项来说,无论从施用方法、施用量、施用期和肥料种类上都创造出显著的成果,对水稻增产起着重要的作用。 一、采用多基少追的施肥方法 渤海地区的稻田,大都是盐硷洼地,土壤结构不良,含盐较多(氯化钠在0.4％左右),有机质缺乏(一般在1％左右),加之连年种稻,而稻又是喜肥高产的作物,这样专靠追施化肥,是不能满足水稻生育的充分需要,和改良盐硷地的。因此,要改变专追化肥不施基肥的习惯,采用多基少追的施肥方法,大量推广粗肥作基肥的科学技术,来改良土壤,提高产量。因为施底肥的肥效长,肥效稳,肥效养分全,能使土
After the liberation, the motherland’s construction has made great achievements in all aspects; the development of agriculture in Bohai is no exception. Taking rice fertilization as an example, no matter from the application method, application rate, application period and type of fertilizer Create remarkable results and play an important role in increasing rice production. First, the use of less fertilizer to chase more than the base of the Bohai Sea rice fields, mostly saline-alkaline depression, poor soil structure, salt more (sodium chloride at about 0.4%), lack of organic matter (usually about 1%), combined with Year after year of rice, but rice is hi-yielding crops, so top-dressing fertilizer alone can not meet the full needs of rice growth, and to improve salt and alkali. Therefore, it is necessary to change the practice of exclusively chasing chemical fertilizers without applying the base fertilizer, adopt the methods of fertilizing with more bases and less chasing, and promote the science and technology of using coarse fertilizer as basal fertilizer in a large amount to improve the soil and increase the yield. Fertilizer effect because of the base fertilizer, fertilizer efficiency and stability, fertilizer nutrients full, make the soil