ZHANG Tianyi,LI Huixia,ZHANG Xueke,et al.Effects of Magnesium Fertilizer on Growth and Potassium and Calcium Uptake in Tomato Under Solar Greenhouse[J].Northern Horticulture,2022,(05):60-68.[doi:10.11937/bfyy.20214092]
土施镁肥对设施番茄生理特性及钾、钙养分吸收的影响
- Title:
- Effects of Magnesium Fertilizer on Growth and Potassium and Calcium Uptake in Tomato Under Solar Greenhouse
- Keywords:
- tomato; magnesium fertilizer; grow; K-Mg interaction; Ca-Mg interaction
- 文献标志码:
- A
- 摘要:
- 以番茄为试材，采用不施镁肥为对照（CK），设置15、30、45、60 kg?hm-2 4个镁肥处理（分别记作Mg-1、Mg-2、Mg-3和Mg-4），研究施用镁肥对番茄生长、生理生化特性及钾、钙、镁养分吸收的影响,以期为设施条件下蔬菜养分综合调控和利用提供参考依据。结果表明：1）Mg-2处理株高显著低于其它处理，其较CK低12.75%，但叶面积较大；叶片生物量中Mg-2最大，其较CK和Mg-4平均增加54.67%。2）Mg-1、Mg-2处理净光合速率、蒸腾速率较CK分别平均增高30.85%、29.58%，各处理胞间CO2浓度较CK平均增高52.09%；Mg-1、Mg-2、Mg-3处理间超氧化物歧化酶（SOD）活性无差异。但Mg-1处理显著高于CK和 Mg-4处理，丙二醛（MDA）与之相反；过氧化物酶（POD）活性随施镁量增加逐渐增强。3）番茄整株镁、钾、钙养分吸收量相比，Mg-1、Mg-2、Mg-3均高于CK和 Mg-4处理，但三者间并无显著差异，番茄叶片镁、钾间和钾、钙间存在显著正相关关系。由此可见，石灰性土壤施用镁肥能够促进番茄生长、光合参数，显著影响酶活性；能够促进番茄对镁、钾、钙养分的吸收，日光温室条件下且土壤钾含量较低时施镁量在30～45 kg?hm-2较为适宜。
- Abstract:
- Tomato was used as the test material,and no magnesium fertilizer was used as the control (CK),and 15,30,45 kg?hm-2 and 60 kg?hm-2 four magnesium fertilizer treatments were set (referred to as Mg-1,Mg-2,Mg-3 and Mg-4),the effect of applying magnesium fertilizer on tomato growth,physiological and biochemical characteristics and nutrient absorption of potassium,calcium and magnesium were studied,in order to provide an important theoretical and practical basis for the comprehensive regulation and utilization of vegetable nutrients under facility conditions.The results showed that,1) the Mg-2 treatment plant height was 12.75% lower than CK,but the leaf area was larger;the leaf biomass Mg-2 treatment was the largest,and it was average increased by 54.67% higher than CK and Mg-4;2)Mg-1,Mg-2 Pn,Tr were average increase respectively 30.85%,29.58% higher than CK ,Ci of each treatments was average increased by 52.09% higher than CK.There was no difference for the activity of superoxide dismutase (SOD) processed with Mg-1,Mg-2 and Mg-3.However,the activity was significantly higher for the process of Mg-1 compared with the process of CK and Mg-4.And it was quite the opposite for malondialdehyde (MDA);The activity of peroxidase (POD) was gradually enhanced with the increase of magnesium.3) With the regard to the absorbability of magnesium,potassium,and calcium for the whole tomato plant,Mg-1,Mg-2,and Mg-3 are all higher than CK and Mg-4 for the process.However,there was no significant difference for the three,magnesium in the tomato leaf,potassium,and calcium were in a significant positive correlation.There fore,we could learn that soil of calcaric property with the addition of magnesium would enhance the growth of tomato,photosynthetic parameters to significantly influence the activity of enzyme;It would enhance the absorption of tomato for magnesium,potassium,and calcium.Under the condition of solar greenhouse and low soil potassium content,the amount of magnesium application was more suitable at 30-45 kg?hm-2.
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备注/Memo
第一作者简介：张天一（1998-），男，硕士研究生，研究方向为农业资源利用与植物保护。E-mail:849417655@qq.com.责任作者：李惠霞（1976-），女，博士，副教授，现主要从事作物养分调控与利用等研究工作。E-mail:lihuixia_76@163.com.基金项目：国家自然科学基金资助项目（31960628）； 2019年宁夏大学博士科研启动金资助项目；宁夏重点研发计划（引才专项）资助项目(2019BEB04007)。收稿日期：2021-10-07