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3 不同栽培模式下马铃薯叶片SPAD

Table 3 SPAD of potato under different cultivation models

年份 Year 处理 Treatment 苗期 Seedling stage 现蕾期 Squaring stage 花期 Flowering stage 块茎膨大期 Tuber expanding stage 淀粉积累期 Starching accumulation stage 2017 CK 50.73±0.43 a 58.27±0.86 b 60.58±0.91 b 62.49±0.69 b 53.87±1.06 b YE 52.90±0.96 a 61.73±0.57 a 64.68±0.80 a 66.67±0.87 a 60.36±0.75 a HY 51.29±0.86 a 62.80±0.76 a 65.48±0.52 a 66.13±0.57 a 58.67±0.78 a 2018 CK 45.07±0.75 a 50.23±0.57 b 52.66±0.34 b 56.60±1.07 b 47.19±2.16 b YE 46.58±0.31 a 54.76±0.54 a 55.86±1.19 a 61.15±0.44 a 55.16±0.31 a HY 45.88±0.62 a 55.26±0.25 a 56.92±0.91 a 61.02±0.20 a 54.56±0.33 a 2019 CK 42.03±0.99 b 48.15±1.03 b 53.43±1.06 b 58.62±1.04 b 48.58±0.93 b YE 45.29±0.76 a 55.82±0.85 a 58.82±0.42 a 62.37±0.63 a 53.40±0.74 a HY 46.62±0.54 a 56.14±0.25 a 57.58±0.78 a 63.22±0.29 a 52.73±0.28 a