|Table of Contents|

Effects of Different Nitrogen Application Rates on Chlorophyll Content and Diurnal Change of Photosynthetic Characteristics of Compound Sand Culture Tomato

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年05
Page:
8-14
Research Field:
Publishing date:

Info

Title:
Effects of Different Nitrogen Application Rates on Chlorophyll Content and Diurnal Change of Photosynthetic Characteristics of Compound Sand Culture Tomato
Author(s):
LIU Qianjie1; JIA Kai1; CHEN Jian2; WU Hui1
(1.College of Forestry and Horticulture,Xinjiang Agricultural University,Urumqi,Xinjiang 830052;2.Agricultural Science and Technology Extension Center of Hetian Prefecture，Hetian，Xinjiang 848000)
Keywords:
tomato; nitrogen application; chlorophyll content; photosynthetic characteristics
PACS:
-
DOI:
10.11937/bfyy.20192488
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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Last Update: 2020-04-05