| 不同酸调节溶液pH对生菜漂浮幼苗根系形态及产量的影响(英文) |
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| 引用本文： | 张白鸽,陈琼贤,王金祥,杨秋,曹健,赫新洲.不同酸调节溶液pH对生菜漂浮幼苗根系形态及产量的影响(英文)[J].Agricultural Science&Technology,2011(7). |
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| 作者姓名： | 张白鸽 陈琼贤 王金祥 杨秋 曹健 赫新洲 |
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| 作者单位： | 广东省农业科学院蔬菜研究所;华南农业大学根系生物学中心; |
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| 基金项目： | Supported by Special Fund for Guangdong Modern Agriculture Industrial System Construction (Guangdong Agriculture 2009-380 ); Key Agriculture Project of Guangdong Science and Technology Department (2009B020202003 ); Key Agriculture Project of Guangdong Science and Technology Department (2009B020304002); Agriculture Brainstorm Project of Panyu District Guangzhou,Guangdong Province (2010-Z-82-1)~~ |
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| 摘 要： | 目的]为了解在蔬菜漂浮育苗系统中,采用不同酸调节溶液pH是否会对蔬菜根系及其它生长指标产生不同影响。方法]分别采用硝酸和硫酸调节生菜(Lactuca sativa)漂浮育苗系统中不同营养液浓度下的溶液pH,观察两种酸对生菜根系形态的影响。结果]不同营养液浓度下,两种酸对根系的影响效果不同。硝酸处理下,随着营养液浓度的增加,生菜地上部、根部生物量都增加,当营养液EC达到1.0μs/cm时,生菜地上部、根部鲜重显著高于硫酸处理;硫酸处理下,当营养液EC达到0.8μs/cm时,生菜的总根长达到344.8 cm,根总表面积为40.9 cm2,投影面积为13.0 cm2,根体积为0.4 m3,显著高于硝酸处理下的相应根系形态指标。比较同一营养液浓度下两种酸的处理效果发现,硫酸处理增加生菜根冠比,促进总根长、根表面积等根系形态的生长;硝酸处理促进生菜地上部生长、促进侧根发育、提高移苗效率、移苗后利于实现高产。结论]该研究为生菜等蔬菜漂浮育苗和集约化穴盘育苗营养调控技术奠定理论基础。
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| 关 键 词： | 硝酸 硫酸 pH 根系形态 漂浮育苗 |
Effect of Different pH-regulating Acids on Root Morphology and Yield of Lettuce in Floating Transplant System |
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| ZHANG Bai-ge,CHEN Qiong-xian,WANG Jin-xiang,YANG Qiu,CAO Jian,HE Xin-zhou.Effect of Different pH-regulating Acids on Root Morphology and Yield of Lettuce in Floating Transplant System[J].农业科学与技术(英文版),2011(7). |
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| Authors: | ZHANG Bai-ge CHEN Qiong-xian WANG Jin-xiang YANG Qiu CAO Jian HE Xin-zhou |
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| Institution: | ZHANG Bai-ge1,CHEN Qiong-xian1*,WANG Jin-xiang2,YANG Qiu1,CAO Jian1,HE Xin-zhou1 1.Institute of Vegetable Research,Guangdong Academy of Agricultural Sciences,Guangzhou 510642,2.Laboratory of Plant Nutritional Genetics,Root Biology Center,South China Agricultural University |
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| Abstract: | Objective] The aim was to investigate different effects of two pH-regulating acids on the root morphology and other physiological growth of Lactuca sativa L.in floating plug transplant system.Method] HNO3 and H2SO4 were used to adjust pH condition of various nutrient concentrations in lettuce floating transplant system,the effect of two acid treatments on root traits of lettuce were investigated.Result] These two acids made different effects on root system under a series of nutrient gradients.Under HNO3 ... |
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| Keywords: | Nitrate Sulfur pH Root morphology Floating transplant system |
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