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进行N、P、K缺素试验,测算出三要素土壤原料蔗生产能力hm2分别为64065kg、71280kg、69690kg,根据广西旱地甘蔗模式施肥公式,计算出针对该蔗区目标产量达到90000kghm-2时,N、P2O5、K2O三要素吸收参数-hm2分别为226.91kg、181.55kg、181.42kg,根据GB15063-2001复混肥料技术标准,初步设计针对该蔗区甘蔗专用肥配方养分总量为26%,N、P2O5、K2O=10:8:8。依此配方生产样肥在该蔗区进行肥效验证,比对照增产、增糖分别为21.54%、0.78%(绝对值)。确定针对桂中部分蔗区的甘蔗专用肥配方,提供生产企业进行产业化生产与推广应用。
According to the fertilization formula of sugarcane in dryland of Guangxi, it was calculated that when the target production of this sugarcane reached 90000kghm-2, the productivity of raw material sugarcane (hm2) was 64065kg, 71280kg and 69690kg, respectively. According to GB15063-2001 technical standards for compound fertilizers, the total amount of nutrients for the sugarcane special fertilizer in this sugarcane area was 26%, and the total N, P2O5 and K2O absorption parameters-hm2 were 226.91kg, 181.55kg and 181.42kg respectively. The N , P2O5, K2O = 10: 8: 8. Fertilizer production according to this formula fertilizer efficiency in the sugarcane area than the control yield, increasing sugar were 21.54%, 0.78% (absolute value). Determine the sugarcane special fertilizer formula for some sugarcane fields in Guizhong and provide production enterprises with industrialized production and popularization and application.