頁籤選單縮合
題名 | 給水量與溫度對設施內甘藍穴盤苗生長之影響=Influence of Water Supply and Temperature on Plug Seedlings of Cabbage |
---|---|
作者 | 孫永偉; | 書刊名 | 中華農業氣象 |
卷期 | 4:3 1997.07[民86.07] |
頁次 | 頁139-144 |
分類號 | 435.233 |
關鍵詞 | 灌溉; 積溫; 蒸發散量; 壯苗指數; 穴盤苗; 甘藍; Irrigation; Accumulated temperature; Evapotranspiration; Strong index; Plug seedlings; Cabbage; |
語文 | 中文(Chinese) |
中文摘要 | 本試驗係探討給水量、設施內溫度變化與甘藍穴盤苗生長之關係,並確立設施內 溫度變化與給水量、蒸發散量之關係。試驗結果顯示當給水量維持穴盤重2.5∼3.5 kg plug �笐縴ay�笐螳氶A穴盤苗壯苗指數、地上部乾重、根乾重、乾重/鮮重比植和田間定植成活率 均較高。給水量高,使穴盤重增至3.5kg plug�笐縴ay�笐螳氶A株高最高,壯苗指數和成活 率卻降低,即穴盤苗徒長情形嚴重。給水量少,使穴盤重低於2.5 kg plug�笐縴ay�笐螳氶A 株高最矮、植株乾重最低,植株生長受阻。給水量與穴盤蒸發散量關係密切,即給水量愈多 ,蒸發散量也愈大。累積蒸發散量與積溫亦呈極顯著正相關。積溫與株高、壯苗指數、地上 部乾重、以及根乾重均為線性關係,但與乾重/鮮重和根/莖比值為二次方程式關係。此外壯 苗指數與根乾重值非常接近,且變化趨勢與定植間成活率一致。 |
英文摘要 | The objective of this research was to study the effects of water supply and temperature on plug seedlings of cabbage, and relationship betwwen water supply and evaportanspiration with temperature in greenhouses.The results indicated that dry weight of shoot and root and ratios of shoot DW/Ht. and total DW/FW of seedlings in plug weight of 2.5∼3.5 kg plug�笐縴ay�笐膿ere better than those of 3.8 and 2.2 kg plug�笐縴ay�笐�.Stem height of seedlings were too long if too much water was applied.Evapotranspiration rom plugs increased with the amount of water supplied.Positive correlations were observed between accumulated temperature and stem height, shoo DW, root DW, shoot DW/Ht.. However , quadratic correlations were observed between accumulated temperature and total DW/FW and root DW/shoot DW. Besides, changes of strong index(=shoot DW/Ht.), and root DW of different irrigation treatments were in close agreement with survival rate after transplanting. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。