施氮量和种植密度对海岛棉冠层结构和光合特性的影响

王丽, 张承洁, 胡浩然, 宁丽云, 吴一帆, 郭仁松, 张巨松

Effects of Nitrogen Application Rate and Planting Density on Canopy Structure and Photosynthetic Characteristics of Sea Island Cotton

Wang Li, Zhang Chengjie, Hu Haoran, Ning Liyun, Wu Yifan, Guo Rensong, Zhang Jusong

表1 2023年试验地土壤养分含量

Table 1 Nutrients contents of the experimental plot soil in 2023

土壤深度 Soil depth (cm) 有机质 Organic matter (g/kg) 全氮 Total nitrogen (g/kg) 碱解氮 Available N (mg/kg) 有效磷 Available P (mg/kg) 速效钾 Available K (mg/kg) 0~20 9.172 0.542 45.090 19.406 112.367 20~40 6.638 0.380 29.971 19.256 161.923 40~60 4.658 0.383 20.066 8.843 196.770 平均值 Average 6.823 0.435 31.705 15.835 157.020