广西特定蔗区甘蔗专用肥配方初探

Exploring the Formulation of Sugarcane Special Fertilizer for Designated Cane Growing Area

应用广西旱地甘蔗模式施肥公式及参数,确定适合特定蔗区崇左、驮卢、扶绥、宁明等糖厂蔗区施用的甘蔗专用肥配方为总养分29.8%,N、P、K配比为8-11.8-10。经田间肥效验证试验结果表明,施用29.8%甘蔗专用肥、30%普通复混肥和常规施肥(CK)甘蔗平均公顷有效茎数(条)分别为61650、60150、61350,平均公顷产量分别为102435kg、91530kg、84345kg,平均蔗糖分分别为14.49%(绝对值,下同)14.30%、14.06%;施用29.8%甘蔗专用肥比30%普通复混肥和常规施肥(CK)的农业纯收入公顷分别增加1962.9元和3256.2元。

The proper formula of sugarcane special fertilizer, which were adaptable to the sugarcane growing areas in Chongzuo, Tuolu, Fusui, Ningming in Guangxi, includes 29.8% of total nutrient（N,P,K） and the ratio of N, P and K was 8：11.8：10, on the base of the model and parameter for fertilizing on upland in Guangxi. The trial results showed that, by applying 29.8% sugarcane special fertilizer, 30% conventional compound fertilizer and conventional fertilizer （used as the control, CK） respectively to the sugarcane field, the number of millable stalks was 61650, 60150, 61350 per hectare, and the average yield was equivalent to 102435kg/hm^2, 91530kg/hm^2, 84345kg/hm^2. Besides, the average sugar content was 14.49%（absolute value, hereafter）, 14.30% and 14.06% respectively. The net agricultural income attained per hectare with the application of 29.8% sugarcane special fertilizer was 1962.9 RMB yuan and 32562 RMB yuan respectively more than that with the application of 30% conventional compound fertilizer and conventional fertilizer.