施氮量对日光温室番茄开花坐果期光合和根系特性及土壤酶活性的影响
Effects of Nitrogen Application on the Photosynthesis,Root Characteristics,and Soil Enzyme Activity during the Flowering and Fruiting Period of Greenhouse Tomatoes in Solar Greenhouse
陈震 1高俊杰 1刘中良 1王婷 1韩珑 1谷端银 1闫伟强 1曹杰2
作者信息
- 1. 泰安市农业科学院,山东泰安 271000
- 2. 山东农业大学园艺科学与工程学院,山东泰安 271018
- 折叠
摘要
以圣罗兰为试材,采用半开放槽式栽培,在等量磷、钾肥处理下,设置13个施氮量处理,研究不同追施氮量对日光温室番茄开花坐果期叶片光合作用、根系特性及土壤酶活性的影响.结果表明:适宜施氮量能够促进日光温室番茄开花坐果期生长发育,提高土壤酶活性,其中T11处理下植株叶片叶绿素a、叶绿素b和类胡萝卜素含量最高,叶绿素a/b最低,叶片净光合速率最高,比不施氮处理提高15.83％,叶片硝酸还原酶活性最高[61.37μg·g-1·h-1(FW)],根系活力最高,根系长度最长,土壤蔗糖酶、酸性磷酸酶活性最高.综上,本研究条件下T11处理,即施氮量为3.0 kg·(667 m2)-1为日光温室番茄开花坐果期最适追施氮量.
Abstract
Using the Saint Laurent tomato as the experimental material and employing semi-open ditch cultivation,under equal phosphorus and potassium fertilizer treatments,13 nitrogen application treatments were set to investigate the effects of different nitrogen application levels on the photosynthesis of leaves,root characteristics,and soil enzyme activity during the flowering and fruiting period of greenhouse tomatoes in solar greenhouse.The results showed that an appropriate nitrogen application level could promote the growth and development of greenhouse tomatoes during the flowering and fruiting period,as well as increase soil enzyme activity.Among the treatments,treatment T11 exhibited the highest content of chlorophyll a,chlorophyll b,and carotenoids in plant leaves,the lowest chlorophyll a/b ratio,the highest net photosynthetic rate in leaves,15.83％higher compared to the no nitrogen application treatment,the highest nitrate reductase activity in leaves[61.37 μg·g-1·h-1(FW)],the highest root vitality,the longest root length,and the highest activities of soil sucrase and acid phosphatase enzymes.In conclusion,under the conditions of this study,treatment T11,with a nitrogen application level of 45.0 kg·hm-2,was determined to be the most appropriate nitrogen application level during the flowering and fruiting period of greenhouse tomatoes in a solar greenhouse.
关键词
番茄/开花坐果期/施氮量/生长发育/土壤酶活性Key words
tomato/flowering and fruiting period/nitrogen application/growth and development/soil enzyme activity引用本文复制引用
基金项目
山东省蔬菜产业技术体系项目(SDAIT-05)
出版年
2024
国家科技期刊平台
NSTL
万方数据