LIU Qianjie,JIA Kai,CHEN Jian,et al.Effects of Different Nitrogen Application Rates on Chlorophyll Content and Diurnal Change of Photosynthetic Characteristics of Compound Sand Culture Tomato[J].Northern Horticulture,2020,44(05):8-14.[doi:10.11937/bfyy.20192488]
不同施氮量对复合沙培番茄叶绿素含量及光合特性日变化的影响
- Title:
- Effects of Different Nitrogen Application Rates on Chlorophyll Content and Diurnal Change of Photosynthetic Characteristics of Compound Sand Culture Tomato
- 文献标志码:
- A
- 摘要:
- 以‘毛粉812’番茄为试材，采用复合沙培基质槽式栽培的方法，设置0 kg·hm-2（N0，CK）、143 kg·hm-2（N1）、285 kg·hm-2（N2）、428 kg·hm-2（N3）、571 kg·hm-2（N4）共5个施氮水平，研究了不同施氮量对复合沙培番茄叶绿素含量及光合日变化的影响，以期为复合沙培番茄氮管理模式提供参考依据。结果表明：番茄叶绿素含量随着生育期的推进呈现先增加后降低的趋势，合理的施氮量对叶绿素含量的提高均起到了促进作用。叶绿素总含量在N3处理下取得最大值，为1.98 mg·g-1，且与对照存在显著性差异。在不同施氮量条件下，番茄叶片的净光合速率日变化呈现双峰曲线，缺氮或高氮均会显著影响番茄的净光合速率，而适量的氮肥不仅能节约农业成本，也能提高植株的净光合速率，达到高产优质的目的。因此，推荐428 kg·hm-2为复合沙培番茄种植施肥标准。
- Abstract:
- Using ‘Maofen 812’ tomato as experimental material，trough cultivation method of compound sand culture medium was adopted.Five nitrogen application levels of 0 kg·hm-2 (N0，CK)，143 kg·hm-2 (N1)，285 kg·hm-2 (N2)，428 kg·hm-2 (N3) and 571 kg·hm-2 (N4) were set.Effects of different nitrogen application rates on chlorophyll content and diurnal variation of photosynthesis in compound sand culture tomato were studied.In order to provide a theoretical basis for compound sand culture tomato nitrogen management model.The results showed that the chlorophyll content of tomato increased at first and then decreased with the advance of growth period，and reasonable nitrogen application rate promoted the increase of chlorophyll content.The total content of chlorophyll reached the maximum under N3 treatment，which was 1.98 mg·g-1，and there was significant difference between N3 and the control.Under different nitrogen application rates，the diurnal variation of net photosynthetic rate of tomato leaves showed a double-peak curve，nitrogen deficiency or high nitrogen would significantly affect the net photosynthetic rate of tomato，and appropriate amount of nitrogen fertilizer could not only save agricultural cost，but also increase the net photosynthetic rate of plants,to achieve the goal of high yield and high quality.Therefore，428 kg·hm-2 was recommended as the fertilization standard for compound sand culture tomato.
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备注/Memo
第一作者简介：刘迁杰（1993-），女，硕士研究生，研究方向为蔬菜栽培与生理。E-mail:lqj159753@126.com.责任作者：吴慧（1967-），女，硕士，副教授，硕士生导师，现主要从事蔬菜栽培与生理等研究工作。E-mail:huiwu1103@126.com.基金项目：新疆维吾尔自治区区域协同创新专项（科技援疆计划）资助项目（2017E0231）；新疆维吾尔自治区园艺学重点学科资助项目（2016107583）。收稿日期：2019-09-16