|Table of Contents|

Response of Photosynthetic Characteristics of Astragalus mongholicus Bunge to Different Fertilization (Organic) Levels

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年10
Page:
89-94
Research Field:
Publishing date:

Info

Title:
Response of Photosynthetic Characteristics of Astragalus mongholicus Bunge to Different Fertilization (Organic) Levels
Author(s):
HE Xueling; WEI Qinfang; ZHANG Xiaolan
(Commercial Crop Technology Extension Station of Dingxi,Dingxi,Gansu 743000)
Keywords:
Astragalus mongholicus Bunge; organic fertilizer; photosynthetic characteristics; light response; environmental factors
PACS:
-
DOI:
10.11937/bfyy.20214302
Abstract:
One-year-old Astragalus mongholicus Bunge was used as experimental material,five fertilization levels (0,500,1 000,1 500 and 2 000 kg per 667 m2) were set.The effects of different fertilization rates on net photosynthetic rate (Pn),stomatal conductance (Gs),transpiration rate (Tr),intercellular CO2 concentration (Ci),maximum net photosynthetic rate (Pnmax),light compensation point (LCP),light saturation point (LSP) and dark respiration rate (Rd) of Astragalus mongholicus Bunge were studied,in order to provide reference for the fertilization of light and characteristics of Astragalus mongholicus Bunge.The results showed that,1) Proper application of organic fertilizer increased Pn,Pnmax,Rd,LCP,Tr and Gs of Astragalus mongholicus Bunge and decreased Ci,but had no obvious effect on LSP.2) the maximum Pn,the maximum Pnmax,the maximum Tr,Gs and Rd,and the minimum Ci were observed when the fertilization application of 667 m2 was 1 500 kg,1 500-2 000 kg,1 000-1 500 kg,and 2 000 kg,respectively.However,the optimal fertilization rate of LCP and LSP varied greatly with different months.Therefore,the timing capacity of 1 500-2 000 kg organic fertilizer per 667 m2 of cultivated Astragalus mongholicus Bunge in this area was the best.

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Last Update: 2022-07-04