甘蔗复合肥在赣南蔗区的应用效益初报

1992年研制的甘蔗复合肥（N10％、P2O56％K2O9％）是根据甘蔗需肥特点，赣南蔗区土壤养分状况，确定养分配方和合理用料。由地区农科所复合肥厂生产。在蔗区多点多种土壤类型进行试验，取得了增产、增糖、增效益的结果。甘蔗复合肥亩施100kg比习惯施肥、比等量的N、P、K现配现施，增产8.66－3．26％，增糖份0.63－0．64％（绝对值以下同）亩施150kg比亩施100kg、增产3．96％，减糖份0．27％。1993年全区4个糖厂推广9910亩，94年初步统计6个糖厂推广12000亩。今后要加速推广，主要措施是提高认识、抓好示范，保证产品质量，对蔗农优惠服务。

Preliminary Report on the Benefit of Compound Fertilizer Applied to the Sugarcane Belt in South

The compound fertilizer (N10%. P2O56%, K2O9%) used for Sugarcane was developed in 1992. Its nutrient formula and rational stuff were established aecording to the characteristics of the fertilizer requirement for sugarcane and the status of soil nutrients in South Jiangxi cane belt. It was produced by the compound fertilizer workshop of Agriculture Research Institute of Ganzhou Region. The field experiments at multiple sites in many soil types of cane belt gave the result of increasing cane yield, sucrose content and ecollomic' benifit. Application of the compoutid fertilizer at the rate of 100kg/mu was more tlian customary fertilization and instantly blended application of N, P and K fertilizer at the equivalent in nutrient content by 8.66%and 3. 26%in cane yield, 0.53 and 0.46 percent points in sucrose content respectively. Application of the compound fertilizer at the rate of 150kg/mu increased by 3.98%in cane yield and decreased by 0.27 percent points in sucrose content as compared with application at the rate of 100kg/mu.The area of extended application of the compound ferilizer to the cane belt of 4 sugar mills in 1993 and 6 sugar mills in 1994 was estimated at 9910mu and 12000 mu respectively. In order to. advanle the extended applipation hereafter, enough attention. should be well paid to. recognize the advantages of the compound fertilizer, to take good hold of the field demonstration, to guarantee the quality of product, and to serve cane growers with privilege.