|Title:||微量元素對水稻苗床之影響(第三報)錳對水稻收量之影響(水耕試驗）||Other Titles:||Effects of Some Minor Elements on the Nursery Bed of Rice Plants (Ⅲ) The Effect of Manganese on the Yield of Paddy Rice (Water Culture Experiment)||Authors:||徐水泉
|Issue Date:||7-Dec-1957||Publisher:||農業試驗所||Journal Volume:||7||Journal Issue:||4||Start page/Pages:||1-6||Source:||農業研究||Abstract:||
(2) 移植後施用錳對水稻收量之影響：依錳濃度不同影響水稻生育甚大。尤其適量之施用對分糵及藁谷收量有良好影響。Mn 1~5ppm時效果最佳，20ppm時收量減少，50ppm時毒害甚大。對照區（無錳）之藁收量為100時，Mn 1~5ppm為124，Mn 20ppm為76，Mn 50ppm為34，對谷收量之指數，Mn 1~5ppm為116，Mn 20ppm為70，Mn 50ppm為19。
In order to ascrtaining the effect of manganese on the yield of paddy rice, water culture experiment were carried out in the green house. 500 ml. beakers as germination beds and 2 litre glass cylinders as water culture vessels were used. Culture solution was changed twice a week. There were two sections in this experiment being concerned.
(1) The effect of manganese applied in the nursery on the yield of paddy rice; Manganese was only applied in the nursery but not after transplantation. The result showed little difference of the growth of rice plants between the check plot and the treated plot after transplantation. It indicated that manganese absorbed by rice seedlings did not influence the latter growth of rice unless manganese would be applied continuously after transplantation.
(2) The effect of manganese applied after transplantation on the yield of paddy rice; Manganese effect much on the grwoth of rice plant due to the concentratration of Mn in culture solution. Number of culm, yields of straw and grain in the optimum Mn plot was increased, and the difference between the treated plot and the check plot was significant. Taking the yields of straw and grain of the check plot as 100 respectively, that of the other treated plot was calculated as follow; (Mn 1-5 p.p.m.) 124, (Mn 20 ppm.) 76, (Mn 50 p.p.m.) 34 for indices of straw, and (Mn 1-5 p.p.m.) 116, (Mn 20 p.p.m.) 70, (Mn 50 p.p.m.) 19 for the indices of grain.
High correlation between Mn content in rice plant and Mn concentration in culture solution was obtained by chemical analysis. N, P2O5, K2O contents in rice plant were not influenced by Mn treatment. The contents of these elements in straw was higher than that in root.
|Appears in Collections:||1.台灣農業研究(1950～迄今)|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.