文献类型： 外文期刊

作者： Wang, C. ¹ ; She, H. Z. ¹ ; Liu, X. B. ¹ ; Hu, D. ¹ ; Ruan, R. W. ¹ ; Shao, M. B. ² ; Zhang, L. Y. ² ; Zhou, L. B. ² ; Zhang ¹ ;

作者机构： 1.Southwest Univ, Coll Agron & Biotechnol, Chongqing 400716, Peoples R China

2.Guizhou Acad Agr Sci, Inst Upland Food Crops, Guiyang 550006, Guizhou, Peoples R China

关键词： chlorophyll;fertilizer;leaf area index;net photosynthetic rate;productivity

期刊名称：PHOTOSYNTHETICA （ 影响因子：3.189； 五年影响因子：3.38 ）

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收录情况： SCI

摘要： Tartary buckwheat (Fagopyrum tataricum Gaertn) has been praised as one of green foods for humans in the 21(st) century. Effects of fertilization on leaf photosynthetic characteristics and grain yield of tartary buckwheat has not been yet reported in detail. Our experiment was set as a split-plot factorial. The main plots and subplots were designed by fertilizer ratio and rate as: NPK 1:1:1 (A1), NPK 1:4:2 (A2), NPK 1:2:3 (A3), and 300 (B1), 450 (B2), and 600 (B3) kg (NPK) ha(-1). Our results showed that the grain yield was significantly and positively correlated with the net photosynthetic rate (P (N)), stomatal conductance (g (s)), transpiration rate (E), PAR, stomatal limitation value (L-s), chlorophyll content (SPAD value), and leaf area index (LAI), while significantly and negatively correlated with intercellular CO2 concentration (C (i)) and water-use efficiency (WUE). The grain yield, P (N), g (s), E, PAR, L-s, SPAD, and LAI increased and then decreased with enhanced fertilization, and their maximum values appeared in the A2B2 treatment. The C (i) and WUE decreased and then increased with enhanced fertilization, and their minimum values appeared in the A2B2 treatment. Our results suggested that fertilization had significant effects on the leaf photosynthetic capacity and grain yield of tartary buckwheat Yunqiao 1, and the best fertilization strategy was 450 kg ha(-1) with NPK 1:4:2.