کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8879320 | 1624644 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of nitrogen fertilizer and planting density on the leaf photosynthetic characteristics, agronomic traits and grain yield in common buckwheat (Fagopyrum esculentum M.)
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
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چکیده انگلیسی
Nitrogen fertilizer and planting density are two crucial factors that affect the yield of common buckwheat (Fagopyrum esculentum M.). Youqiao2, a common buckwheat cultivar with high photosynthetic capacity and planted widely in local production was used to investigate the effects of nitrogen fertilizer and planting density on the leaf photosynthetic characteristics, agronomic traits, and grain yield in common buckwheat by a split plot design. The main plots were assigned to three nitrogen fertilizer rates: 0, 45, and 90â¯kgâ¯haâ1, and the subplots were assigned to three planting densities: 60, 90, and 120 plants mâ2. Results showed that the grain yield was significantly and positively correlated with net photosynthesis rate (Pn), stomatal conductance (Gs), transpiration rate (Tr), stomatal limitation value (Ls), chlorophyll content (SPAD value), leaf area index (LAI), plant height, stem diameter, branch number, internode number, grain number per plant, and 1000-grain weight, while significantly and negatively correlated with intercellular CO2 concentration (Ci) and water-use efficiency (WUE). The Pn, Gs, Tr, Ls, SPAD, LAI, grain yield, stem diameter, branch number, internode number, grain number per plant, and 1000-grain weight increased and then decreased with the increase of nitrogen fertilizer and planting density, and their maximum values appeared in the nitrogen fertilization of 45â¯kgâ¯haâ1 and planting density of 90 plants mâ2 treatment. The Ci and WUE decreased and then increased with the increase of nitrogen fertilizer and planting density, and their minimum values appeared in the nitrogen fertilization of 45â¯kgâ¯haâ1 and planting density of 90 plants mâ2 treatment. The plant height increased with the increase of nitrogen fertilizer, while decreased with the increase of planting density. These results suggested that nitrogen fertilizer and planting density had significant effects on the leaf photosynthetic capacity, agronomic traits, and grain yield of common buckwheat, and the combination of nitrogen fertilization of 45â¯kgâ¯haâ1 and planting density of 90 plants mâ2 is recommended for common buckwheat planting.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Field Crops Research - Volume 219, 15 April 2018, Pages 160-168
Journal: Field Crops Research - Volume 219, 15 April 2018, Pages 160-168
نویسندگان
Xiaomei Fang, Yingshuang Li, Jiao Nie, Can Wang, Kehui Huang, Yuke Zhang, Yuanli Zhang, Hengzhi She, Xingbei Liu, Renwu Ruan, Xiaohui Yuan, Zelin Yi,