摘要
通过Hoagland营养液水培大蒜,研究不同供硫水平对大蒜生理特性及氮、磷、钾吸收的影响。结果表明:施硫处理大蒜的株高、叶长、叶面积和茎粗均明显高于不施硫对照。在0～2.25mmol·L-1硫浓度范围内,叶片光合速率和超氧化物歧化酶活性随营养液中硫浓度升高而增加,至硫浓度为2.25mmol·L-1时达最大;过氧化物酶活性、过氧化氢酶活性和硝酸还原酶活性以硫浓度为1.50mmol·L-1时最高;大蒜鳞茎和蒜薹全硫和全氮含量均随营养液中硫浓度的升高而增加,与硫浓度呈显著正相关;鳞茎和蒜薹对磷和钾的吸收量以硫浓度为2.25mmol·L-1时最高。
The effects of different sulfur contents on physiological characteristics and absorption of nitrogen,phosphorus and potassium were studied by nutrient solution.The results showed that the plant height,leaf length,leaf area and stem diameter of garlic（Allium sativum L.）treated by sulfur were higher than those without sulfur treatment.When sulfur content was 2.25 mmol·L^-1the photosynthetic parameter（Pn）and SOD activity in garlic leaf were higher.The POD,CAT and NR activity reached maximum when sulfur content was 1.50 mmol·L^-1The analysis showed that the total nitrogen and total sulfur contents in bulb and in bolt positively correlated very significantly with sulfur content in nutrient solution.When sulfur content was 2.25 mmol·L^-1the total phosphorus and total potassium contents in bulb and in bolt were higher.
出处
《中国蔬菜》
北大核心
2010年第10期46-50,共5页
China Vegetables
基金
国家科技支撑计划项目(2006BAD13B06-4-9)
关键词
大蒜
硫
生理特性
氮
磷
钾
Garlic
Sulfur
Physiological Characteristics
Nitrogen
Phosphorus
Potassium
