摘要
针对冷浸田土壤养分有效性低的特征，研究测土配方施肥对水稻产量的影响，以及施用氮磷钾肥的肥料效应，为特定土壤条件下肥料配方提供科学依据。通过“3414”回归最优设计原理的方法设置水稻肥效试验，结果表明：与对照（CK）相比，各配方施肥处理水稻的产量均有所提高；14个处理中以NEP2Kz处理（每667m2施N10kg、P3kg、K8kg）的水稻产量最高，每667m2早晚稻分别为434．6kg和450．5kg；N、P、K3种主要元素中，N对水稻产量影响最大。综合肥料间互作效应拟合方程和最佳经济施肥量，结合当地农业生产实际和施肥经验，建议推荐水稻每667m2施肥量为氮肥11～13kg，磷肥3-4kg，钾肥8-11kg。
As the characteristic of low efficiency of soil nutrient in cold waterlogged paddy field, experiment was conducted to study the effects of soil testing and formulated fertilization on rice yield and fertilization response to NPK, which could provide scientific evidence for fertilizer formula in special soil. Fertilizer response experiment was designed by ＂3414＂ method with regression optimal design principle. The results showed that yields of treatments with formula fertilization were higher than that of CK. Besides, treatment of N2P2K2 （10 kg N, 3 kg P and 8 kg K per 667 m2） had the highest grain yield with 434.6 kg for early rice and 450.5 kg for late rice, respectively. N played the most important effects on rice yield among elements of N, P, K. The optimal economic fertilizer rate and equation could be fitted by integration of the interaction effect of fertilizers. Combined with the local agricultural production practice and fertilization experience, the recommend fertilizer application rate were 11-13 kg for N fertilizer, 3-4 kg for P fertilizer and 8-11 kg per 667 m2 for K fertilizer.
出处
《广东农业科学》
CAS
CSCD
北大核心
2012年第22期70-73,共4页
Guangdong Agricultural Sciences
基金
国家公益性行业(农业)科研专项(201003059)
广东省现代农业产业技术体系专项(粤财教[2009]356号)
关键词
冷浸田
水稻
“3414”试验
测土配方施肥
施肥效益
cold waterlogged paddy field
rice
＂3414＂ experiment
soil and formulated fertilization
fertilization effect
