三峡重庆库区施氮水平对塔罗科血橙树体养分、产量品质及土壤理化性质的影响

杨江波,张绩,李俊杰,郑永强,吕强,谢让金,马岩岩,邓烈,何绍兰,易时来

Effects of Nitrogen Application Levels on Nutrient, Yield and Quality of Tarocco Blood Orange and Soil Physicochemical Properties in the Three Gorges Area of Chongqing

YANG JiangBo,ZHANG Ji,LI JunJie,ZHENG YongQiang,LÜ Qiang,XIE RangJin,MA YanYan,DENG Lie,HE ShaoLan,YI ShiLai

表7 土壤、叶片氮含量与果实养分间的相关性

Table 7 Correlation between nitrogen content in soil and leaves and fruit nutrients (n=18)

成分 Parameters 果实养分含量 Nutrient content in fruit 果实养分带走量 Nutrient removal amount of fruit N P2O5 K2O N P2O5 K2O 春梢叶氮含量 Nitrogen content in spring leaves 0.082 -0.041 0.329 0.376 0.296 0.366 秋梢叶氮含量 Nitrogen content in autumn leaves 0.306 -0.184 0.151 0.113 0.021 0.288 碱解氮含量 Available Nitrogen content 0.254 -0.192 -0.167 -0.323 -0.482* -0.372