摘要
以7年生的红早酥梨为试材,研究不施肥(N_(0)P_(0)K_(0))、缺氮(N_(0)PK)、缺磷(NP_(0)K)、缺钾(NPK_(0))和氮磷钾全施(NPK)的5个施肥处理对红早酥光合特性和果实品质的影响,为农业生产上合理施肥提供参考。结果表明:氮肥对叶片净光合速率、气孔导度和水分利用效率影响较大,磷肥对叶片蒸腾速率、饱和水汽压差影响较大,钾肥对胞间CO_(2)浓度影响较大;氮磷钾全施与不施肥相比,叶片中的净光合速率、蒸腾速率、气孔导度、胞间CO_(2)浓度和水分利用效率分别增大了87.76%、69.95%、104.81%、78.68%和57.14%;缺钾对果实可溶性固形物、总酸、可溶性糖含量影响明显;净光合速率与气孔导度、水分利用效率和果实果径均存在正相关性,胞间CO_(2)浓度与果实果径、可溶性固形物含量和总酸呈显著的正相关(P<0.05)。
The effects of N_(0)P_(0)K_(0),N_(0)PK,NP_(0)K,NPK_(0) and NPK on the photosynthetic characteristics and fruit qualityof the seven-year-old"Hongzaosu"pear were studied,so as to provide a reference for rational fertilization in agri-cultural production.The results showed that nitrogen fertilizer have a great influence on net photosynthetic rate,sto-matal conductance and water use efficiency.Phosphate fertilizer have a great influence on transpiration rate andsaturation vapor pressure difference,and potash fertilizer have a great influence on intercellular CO_(2) concentration.The net photosynthetic rate,transpiration rate,stomatal conductance,intercellular CO_(2) concentration and water useefficiency of the leaves with NPK were increased by 87.76%,69.95%,104.81%,78.68%and 57.14%,respectively,compared with N_(0)P_(0)K_(0).The effect of potassium deficiency on soluble solid,total acid and soluble sugar content wasobvious.The net photosynthetic rate was positively correlated with stomatal conductance,water use efficiency andfruit diameter,and intercellular CO_(2) concentration was significantly positively correlated with fruit diameter,solublesolid content and total acid(P<0.05).
作者
韩多红
周德峰
张鹏举
HAN Duohong;ZHOU Defeng;ZHANG Pengju(College of Life Sciences and Engineering,Hexi University,Zhangye 734000,China;Key Provincial Laboratory of Universities in Gansu Province for Characteristic Resources Utility in Hexi Corridor,Zhangye 734000,China;Forest Farm of Xichengyi,Zhangye 734000,China)
出处
《东北农业科学》
2022年第1期112-116,共5页
Journal of Northeast Agricultural Sciences
基金
甘肃省林业和草原科技计划项目(2019kj028)。
关键词
红早酥
施肥处理
光合特性
果实品质
"Hongzaosu"pear
Fertilization treatment
Photosynthetic characteristics
Fruit quality
