水肥耦合效应对保护地辣椒肥料氮、磷经济利用效率的影响  

Effects of Water and Fertilizers on Rate of N and P_2O_5 Utilization under the Condition of Capsicum Cultivation in Protectd Ground

作　　者：梁运江[1] 依艳丽[2] 许广波[1] 谢修鸿[3] 付民杰[1] 

机构地区：[1]延边大学农学院,吉林龙井133400 [2]沈阳农业大学土地与环境学院,辽宁沈阳110161 [3]长春大学,吉林长春130022

出　　处：《土壤通报》2007年第6期1141-1144,共4页Chinese Journal of Soil Science

摘　　要：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。By means of the quadratic orthogonal rotatory combination design,effects of water and fertilizers on rate of N and P2O5 utilization under the condition of capsicum cultivation in protected soil was studied.The result showed that increasing irrigating water quota could improve rate of N utilization under high amount fertilizer,but deceased rate of N utilization under low amount fertilizer.Effect of nitrogen,phosphate and interaction of irrigation and nitrogen fertilizer,interaction of irrigation and phosphate fertilizer were significant on rate of P2O5 utilization,in order phosphate fertilizer〉interaction of irrigation and phosphate fertilizer〉nitrogen fertilizer〉 interaction of irrigation and nitrogen fertilizer,effect of interaction of irrigation and phosphate fertilize was positive on rate of P2O5 utilization.

关 键 词：辣椒 保护地 肥料 经济利用效率 

分 类 号：S147.5[农业科学—肥料学]