摘要
利用肥料二次回归"3414"设计,对湛江市甘蔗施氮、磷、钾肥料参数进行研究。结果表明:全肥区比缺氮区、缺磷区及缺钾区分别增产6.33%、8.62%及2.44%,其中以磷肥的增产率为最高。通过三元二次施肥模型计算,得出N、P2O5和K2O的最佳施用量分别为171.3、432.0、0 kg/hm2,收益是40 367.92元/hm2。通过肥料"3414"试验,能实现主要养分平衡供应,满足甘蔗高产高糖生产需要,达到提高肥料利用率及高产的目的。
In this study, a design of ＂3414＂ fertilizer experiment was carried out to calculate the fertilization parameters for sugarcane. The results showed that the yield of the full fertilization treatment increased by 6.33%, 8.62% and 2.44% respectively, compared with the treatments of nitrogen-starved, phosphorus-starved and potassium-starved. The effect of phosphorus fertilization was the best among the three elements. Based on the three variable quadratic model regression analysis, the optimal supplying rates of N, P2O5 and K20 were 171.3, 432.0 and 0 kg/hm2 respectively, and the optimum yield was 13 241 kg/hm2 with the income of 40 367.92 yuan/hm2. Based on this experiment, the optimum rates of N, P and K and their optimum combination were recommended.
出处
《广东农业科学》
CAS
CSCD
北大核心
2011年第19期69-72,共4页
Guangdong Agricultural Sciences
基金
科技部院所项目"粤糖系列甘蔗新品种营养调控关键技术与示范"(2010EG111024)
国家现代农业(甘蔗)产业技术体系专项
关键词
甘蔗
“3414”肥料试验
肥料效应
sugarcane
＂3414＂ fertilizer experiment
fertilization parameters
