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采用二次回归正交旋转组合设计,研究了灌水定额、氮肥和磷肥对保护地辣椒肥料氮和肥料磷经济利用效率的影响。研究表明:高量施肥时灌水定额增加能提高氮肥经济利用率,但在低量施肥情况下灌水定额增加却降低氮肥经济利用率。施氮、施磷、水氮交互作用和水磷的交互作用对磷肥经济利用效率的影响显著,其影响大小顺序为施磷>水磷互作>施氮>水氮互作,水磷互作对磷肥经济利率效率为正效应。
The quadratic regression orthogonal rotation combination design was used to study the effects of irrigation quota, nitrogen fertilizer and phosphate fertilizer on the economic utilization efficiency of nitrogen and fertilizer phosphorus in pepper in protected areas. The results showed that when the amount of irrigation was increased, the economic efficiency of nitrogen fertilizer could be increased. However, under the condition of low amount of fertilizer, the increase of irrigation quota reduced the economic utilization rate of nitrogen fertilizer. The interaction of nitrogen, phosphorus, water and nitrogen and water and phosphorus had significant effects on the economic efficiency of phosphate fertilizer, and the order of their effects was as follows: phosphorus application> water and phosphorus interaction> nitrogen application> water and nitrogen interaction, water and phosphorus interaction Phosphate fertilizer economic interest rate efficiency is a positive effect.