摘要
采用"3415"回归最优设计开展了早稻肥效试验,研究中低产田施肥对早季杂交水稻产量的影响。结果表明:(1)氮、磷、钾不同的施肥配比对产量有极显著的影响,氮肥对产量影响最大,磷肥次之,钾肥最小。(2)氮、磷、钾肥料利用率偏低,这与土壤质地、施肥方法以及土壤原养分含量有关。(3)通过配置肥料效应模型,结合不同施肥方法的推荐施肥量和农业生产实际,确定氮、磷和钾肥推荐施用量分别为N165kg/hm2、P2O5135kg/hm2和K2O150kg/hm2,其N∶P2O5∶K2O=1.2∶1∶1.1。
The effects of fertilizer on the production of hybrid rice in middle and lower yield paddy field were investigated by using the 3415 model.The results showed that：（1）N∶P∶K ratio in the fertilizer had significant effects on yield with the effect of the nitrogen was biggest,following by phosphorus and Potassium the minimum;（2）the efficiency of N,P and K utilization was low due to the soil texture,ways of fertilization and the nutrient content in the original soil;（3）through combining the fertilizer effect model with different fertilization methods recommended and agricultural production practice,the application rates of nitrogen,phosphorus and potassium were recommended to be N 165kg/hm^2,P2O5 135kg/hm^2,K2O 150kg/hm^2 with the ratio of N∶P2O5∶ K2O=1.2∶1∶1.1.
出处
《作物杂志》
CAS
CSCD
北大核心
2010年第6期94-97,共4页
Crops
基金
农业部全国测土配方施肥资金补贴项目(海口市)
关键词
早稻
产量
利用率
推荐施肥量
Rice
Yield
Fertilizer utilization
Recommended fertilization
