【作者】 王喜枝； 王立河； 曹雯梅； 介晓磊； 王应君； 孙斌； 刘松涛； 王立秋；

【Author】 Wang Xi-zhi~1 Wang Li-he~1,Cao Wen-mei~1,Jie Xiao-lei~2,Wang Ying-jun~1,Sun Bin~1,Liu Song-tao~1 Wang li-qiu~1 (1.Henan Agricultural Vocational College,Zhengzhou 451450,China;2.Zhengzhou Colleng of Animal Husbandry Engineering;Zhengzhou 450008,China)

【机构】 河南农业职业学院； 郑州牧业工程高等专科学校；

【摘要】 在河南豫东潮土区壤质土壤施用磷肥的基础上,采用裂区设计,研究了氮肥和钾肥配施对强筋小麦旗叶生理活性和籽粒品质的影响。结果表明:氮钾配合施用条件下,氮、钾用量与强筋小麦叶片硝酸还原酶活性、光合速率、蒸腾速率和气孔导度等生理活性指标呈二次曲线关系,对硝酸还原酶活性影响存在着正交互作用,最佳处理组合为N₂₇₀K₁₅₀,通过模拟方程计算强筋小麦生理活性最大时的氮钾用量范围是:氮为217.50～321.00Kg/hm²,钾（K₂O）为1 52.20～223.50Kg/hm²。氮、钾用量与强筋小麦沉降值、面团稳定时间、面团形成时间和弱化度等品质指标呈二次曲线关系,并存在着正交互作用,粗蛋白和湿面筋含量与施氮量呈直线关系,与施钾量呈二次曲线关系,氮钾配施对强筋小麦生理活性的影响与其品质形成的影响是一致的,在本试验条件下,最佳处理组合为N₂₇₀K₁₅₀,适宜的N:K₂O为1.8:1。更多还原

【Abstract】 The split-plot design was applied in field experiment to study the effects of combined application of N and K nutrition on physiological characteristics of flag leaves and grain qualities of strong gluten wheat in Chao soil of east Henan province at base of application of phosphate fertilizer.The results showed that physiological activity indexes of strong gluten wheat such as nitrate reductase（NR） activity,photosynthetic rate,transpiration rate and stomatal conductance was associated quadratic curve with N and K different application rates,and had positive interaction with the nitrate reductase activity,the best treatment combination was N₂₇₀K₁₅₀.To obtain the maximum physiological activity indexes,the suitable application rate of N was217.50～321.00kg·hm^-2 and K₂O was 152.20～223.50 kg·hm^-2.The N and K application rates was associated quadratic curve with quality index such as sedimentation value,dough stabilization time,dough development time,and degree of softening etc.,and had positive interaction.The crude protein and wet gluten content had a simple linear correlation with nitrogen application rate, but Conics with the amount of potassium application rate.The effects of N and K nutrition on physiological characteristics and qualities of strong gluten wheat was consistent,the best combination of the treatment was N₂₇₀K₁₅₀ in this experimental conditions,the proper N and K₂O ratio was 1.8:1.更多还原