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4 不同栽培模式下马铃薯净光合速率和冠层光合能力

Table 4 Net photosynthetic rate and canopy photosynthesis ability of potato under different cultivation models

年份 Year	处理 Treatment	块茎膨大期Tuber expanding stage		淀粉积累期Starching accumulation stage
年份 Year	处理 Treatment	净光合速率(CO₂) Net photosynthetic rate (μmol m^-2 s^-1)	冠层光合能力 Canopy photosynthesis ability (P_n×LAI)	净光合速率(CO₂) Net photosynthetic rate (μmol m^-2 s^-1)	冠层光合能力 Canopy photosynthesis ability (P_n×LAI)
2018	CK	18.92 a	62.72 b	14.69 a	39.81 b
	YE	19.47 a	80.52 a	14.92 a	55.96 a
	HY	19.55 a	83.69 a	15.59 a	60.41 a
2019	CK	19.45 a	65.74 b	15.83 a	44.64 b
	YE	20.22 a	86.34 a	16.36 a	62.41 a
	HY	20.68 a	89.34 a	16.88 a	66.59 a