密度和施肥对旱地马铃薯干物质积累、产量和水肥利用的影响

柳燕兰, 郭贤仕, 张绪成, 马明生, 王宏康

Effects of planting density and fertilization on dry matter accumulation, yield and water-fertilizer utilization of dryland potato

LIU Yan-Lan, GUO Xian-Shi, ZHANG Xu-Cheng, MA Ming-Sheng, WANG Hong-Kang

表6 不同栽培模式下马铃薯肥料积累与利用(2019年)

Table 6 Fertilizer accumulation and utilization of potato under different cultivation models in 2019

指标Item CK YE HY N 氮素总积累量NTA (kg hm-2) 330.04±5.29 b 389.05±11.32 a 397.54±7.14 a 氮素利用效率NUE (kg kg-1) 81.58±0.26 b 93.99±1.65 a 91.67±2.55 a 氮素收获指数NHI 0.78±0.001 b 0.81±0.001 a 0.79±0.015 b P 磷素总积累量PTA (kg hm-2) 24.59±1.18 c 28.45±1.01 b 34.98±0.03 a 磷素利用效率PUE (kg kg-1) 1096.72±66.52 b 1285.33±14.38 a 1041.50±11.11 b 磷素收获指数PHI 0.81±0.015 a 0.81±0.034 a 0.82±0.001 a K 钾素总积累量KTA (kg hm-2) 115.34±1.25 b 165.56±6.54 a 164.43±8.44 a 钾素利用效率KUE (kg kg-1) 233.43±0.47 a 220.89±1.57 b 221.81±9.21 b 钾素收获指数KHI 0.77±0.022 b 0.83±0.079 a 0.88±0.024 a