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黑龙江省西部松嫩平原有碱性土壤耕地1,242万亩,主要是盐碱化草甸土和碳酸盐草甸土。其PH>8以上,全盐量为0.05—0.2％,总碱度达0.5—1.3毫克当量/百克土。有机质在2—3％,全氮1—2.4％,全磷0.05—0.1％,全钾1.8—2.5％。由于土壤盐碱较重,旱田粮食作物亩产只有100—150公斤。为了改良利用低产土壤,增加粮食产量,从1985年起,安达市有关科技人员按照黑龙江省科委下达的盐碱地种水稻开发技术研究课题,在中本乡进行了三年试验研究,且取得了成功。试种水稻面积逐年扩大,产量很快提高。三年累计种稻23,200亩,平均每亩纯收入达144.5元。本试验项目已于1987年11月通过了省级鉴定。现将其主要措施介绍如下:
There are 12.42 million mu of alkaline soil arable land in the Songnen Plain in the west of Heilongjiang Province, mainly consisting of salinized meadow soil and carbonate meadow soil. The PH> 8 above, the total salt content of 0.05-0.2%, the total alkalinity of 0.5-1.3 mg equivalent / 100 grams of soil. 2-3% organic matter, 1-2.4% total nitrogen, 0.05-0.1% total phosphorus, 1.8-2.5% total potassium. Due to the heavier soil salinity, only 100-150 kilos of dry land grain crops are produced. In order to improve the utilization of low-yielding soils and increase food production, since 1985, relevant scientific and technical personnel in Anda City conducted a three-year pilot study in the saline-alkali soil development technology research project issued by Heilongjiang Science and Technology Commission and achieved success . The area of rice to be planted has been expanding year by year, and the output has been rapidly increased. In the past three years, a total of 23,200 hectares of rice were planted, with an average net income of 144.5 yuan per mu. The pilot project passed the provincial appraisal in November 1987. Now the main measures are described below: