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Registros recuperados: 2
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Carbohydrats, N, P and K status of developing rice (Oryza sativa L.) plants grown in the first and second crop seasons in Taiwan Taiwan Agricultural Research Institute
C.S. Chen; D.D. Huang; M.C. Shen; D. J. Liu; 陳建山; 黃定鼎; 沈美珍; 劉大江.
[[abstract]]Concentrations of total nonstructural carbohydrates, N, P and K in different plant parts of rice were analyzed at stages of plant development. Differences between crop seasons were also studied to investigate the physiological causes of low yield of the second crop rice. Accumulation of total nonstructural carbohydrates (TNC) in cuims and leaf sheaths was most evident during the period of panicle development. Highest TNC concentration was recorded earlier in the second crop (25 days before heading) than in the first crop (18 days before hea(S)ding) for rices grown in Taichung. It occurred at heading stage in both crops in Taipei area. The first crop rice accumulated significantly higher amount of TNC in culms at panicle emergence than the...
Palavras-chave: [[classification]]6.
Ano: 1980
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Nitrogen distribution and N2-fixing activity of developing soybean (Glycine max (L.) Merrill) Plants Taiwan Agricultural Research Institute
D.D. Huang; M.C.Shen; C.S. Chen; D.J. Liu; 黃定鼎; 沈美珍; 陳建山; 劉大江.
[[abstract]]Field experiments were conducted to investigate the distribution of N and the specific activity of N2-fixation of soybeans at successive stages of plant development. Nitrogen concentration in leaf blades was consistently higher than those in leaf petioles, stems and roots. Concentration in each plant part, except the seeds, usually decreased as the season progressed. However, N in leaf blades showed a sudden decline at V7 stage and an increase later at R2 stage. Pattern of changes in N in plant parts from different varieties usually was similar. During the pod-filling period (R4-R6), N was redistributed to seeds from vegetative tissues. Shih-Shih and Kaohsiung No. 3 maintained a higher level of N in leaf blades in this period as compared...
Palavras-chave: [[classification]]6.
Ano: 1980
Registros recuperados: 2
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