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上海农学院农学系讲师林志刚、赵仪华研制成功一种适于小块农田应用的成套小型轻便液氮施肥装置。1985年12月14日通过成果鉴定。新装置:①肩负式注射穴施器。利用灭火机筒作液罐,重量轻,个人携带施肥十分方便,注射器由球阀封锁,球阀开启时,液氨喷出注入土壤深层。②机引条施器。由3马力发动机和小型手扶拖拉机带动行走,另配带液罐、开沟犁刀,液氨经施肥管注入开沟犁刀破开的土壤中进行条施,适于较大行株距的蔬菜、棉粮、果树、花卉施基肥和追肥。
Lin Zhigang, Zhao Yihua, a lecturer in agronomy at Shanghai Agricultural College, has successfully developed a complete set of small portable liquid nitrogen fertilizers suitable for small farmland applications. December 14, 1985 through the identification of results. New device: ① Shoulder injection device. The use of fire extinguisher tube for the tank, light weight, personal carrying fertilization is very convenient, the syringe blocked by the ball valve, the valve opens, the liquid ammonia injection into the soil deep. ② machine lead Shi Shi device. Driven by a 3-horsepower engine and a small walking tractor, the other is equipped with a liquid tank and a ditching coulter. The liquid ammonia is injected into the ditched soil of the ditching coulter through the fertilizer application pipe for vegetables of larger row spacing , Cotton, fruit trees, flowers and basic fertilizer and dressing.