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3 施氮对血橙园土壤理化性质的影响

Table 3 Effects of nitrogen application on soil physicochemical properties of blood orange orchard

处理 Treatment 土壤容重 Soil bulk density (g?cm-3) 有机质 Organic matter (g?kg-1) 碱解氮 Available N (mg?kg-1) 有效磷 Available P (mg?kg-1) 速效钾 Available K (mg?kg-1) N0 1.42±0.22a 12.00±0.85a 55.91±4.14c 56.50±3.33bc 163.26±8.26d N1 1.40±0.09a 10.07±0.75b 56.68±2.49c 52.04±5.03c 249.95±9.13c N2 1.52±0.04a 8.72±1.75bc 60.10±7.45c 68.83±11.74b 261.51±8.57c N3 1.35±0.09a 9.50±1.00b 71.79±2.20b 72.32±9.91b 348.96±7.45a N4 1.46±0.13a 6.91±0.71cd 79.24±3.49ab 116.08±12.59a 297.41±10.54b N5 1.42±0.18a 6.71±0.72d 81.13±6.89a 130.24±3.88a 246.96±7.18c