Tang Li-Yuan, Ma Wei, Li Lian-Lu, Zhao Ming
Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2013 Mar;33(3):770-5.
With Chlorophyll Meter SPAD-502 and Canopy Analyzer AccuPAR LP-80, the spectra characteristic effect of different density-resistant maize variety on planting density was studied, and the effect of planting density on photosynthetic performance of maize was discussed. The materials of the experiment were Yinong-103, Xianyu-335, Zhengdan-958 and Denghai-661, the row spacing was 80 cm X 40 cm, the plant spacing was gradually changed from Im to smaller spacing, the densities were 3.33, 3.70, 4.17, 4.50, 4.76, 5.56, 6.67, 6.80, 8.33, 9.00, 11.11, 11.20 and 16.67 planting.m-2 respectively. We studied spectra characteristic effect on planting density, and investigated maize photosynthetic characteristics and density-yield relationship to get high yield. This research can be good case of using maize spectra characteristic to reflect plant photosynthetic characteristics and canopy architecture. The end of this paper was to explore density effect on yield with spectroscopy means.
利用叶绿素仪SPAD - 502和冠层分析仪AccuPAR LP - 80，研究了不同耐密型玉米品种对种植密度的光谱特征效应，并探讨了种植密度对玉米光合性能的影响。试验材料为豫农103、先玉335、郑单958和登海661，行距为80 cm×40 cm，株距从1 m逐渐变小，密度分别为3.33、3.70、4.17、4.50、4.76、5.56、6.67、6.80、8.33、9.00、11.11、11.20和16.67株·m⁻²。我们研究了光谱特征对种植密度的影响，调查了玉米光合特性及密度与产量的关系以实现高产。本研究可为利用玉米光谱特征反映植株光合特性和冠层结构提供良好案例。本文旨在通过光谱手段探究密度对产量的影响。
