水分亏缺下化肥减量配施有机肥对棉花光合特性与产量的影响

冯克云, 王宁, 南宏宇, 高建刚

Effects of chemical fertilizer reduction with organic fertilizer application under water deficit on photosynthetic characteristics and yield of cotton

FENG Ke-Yun, WANG Ning, NAN Hong-Yu, GAO Jian-Gang

表1 试验田0~60 cm土层土壤养分含量

Table 1 Nutrients content in 0-60 cm soil layer of the experimental field before sowing

年份 Year 土层 Soil layer (cm) pH 有机质 Organic matter (g kg-1) 全氮 Total nitrogen (g kg-1) 碱解氮 Alkaline-hydrolytic N (mg kg-1) 速效磷 Available P (mg kg-1) 速效钾 Available K (mg kg-1) 2017 0-20 7.26 12.81 0.62 59.62 28.35 191.27 20-40 7.31 9.78 0.51 46.84 21.38 125.34 40-60 7.38 6.54 0.45 36.97 15.63 82.61 2018 0-20 7.14 13.46 0.67 57.35 29.46 187.35 20-40 7.25 10.15 0.54 48.82 24.37 122.82 40-60 7.32 7.52 0.42 39.67 17.62 87.65