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宁海县青珠农场四胜塘位于三门弯内下洋涂。未围海涂质地为轻粘土,一米涂层平均含盐量(氯化钠,下同)1.17%,酸碱度9.0。四胜塘总面积1,449亩,可垦种净面积1,209亩。1976年春大面积播种田菁,同时试种棉花20亩,平均亩产皮棉80.3斤;冬种大麦250亩,平均亩产76斤。1977年全塘垦种棉花、水稻、柑桔共715亩,占可垦种净面积60%,生长较好,300亩棉花平均亩产皮棉达116.5斤,为新围涂地迅速垦种利用和植棉速获高产取得了经验。现将四胜塘棉花高产技术经验,分述于下。
Ninghai County, Qingzhu farm four wins pond located in Sanmen bend under the ocean Tu. Sea soil is not enclosed for light clay, the average salt content of one meter coating (sodium chloride, the same below) 1.17%, pH 9.0. Sisheng Tong a total area of 1,449 mu, reclamation net area of 1,209 acres. Large areas of spring 1976 sowing, at the same time to test 20 acres of cotton, the average yield of lint 80.3 kg; winter barley 250 acres, an average of 76 kg per mu. In 1977, 715 mu of cotton, rice and citrus were planted in the whole pond, accounting for 60% of the reclamation net area. The average growth of 300 mu of cotton was 116.5 kg, Gaining experience in high cotton yield. Now four wins Tong cotton high yielding technical experience, points out in the next.