|Table of Contents|

The Effect of Nitrogen Fertilizer Reduction and Rhizobium Inoculation on Soybean Photosynthesis and Yield
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《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2019年03期
Page:
413-420
Research Field:
Publishing date:

Info

Title:
The Effect of Nitrogen Fertilizer Reduction and Rhizobium Inoculation on Soybean Photosynthesis and Yield
Author(s):
ZHENG Hao-yu; HUANG Bing-lin;  WANG Meng-xue;  JIN Xi-jun;  ZHANG Yu-xian;  HU Guo-hua
(College of Agronomy，Heilongjiang Bayi Agricultural University，Daqing 163319, China)
Keywords:
Soybean; Nitrogen fertilizer reduction;  Rhizobia;  Photosynthesis;  Yield;  Dry matter
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2019.03.0413
Abstract:
In order to revealed the effects of nitrogen fertilizer reduction and different of rhizobia inoculation on soybean photosynthesis and yield, the effects of nitrogen fertilizer reduction and rhizobia inoculation on net photosynthetic rate, transpiration rate, stomatal conductance, intercellular CO2 concentration and soybean yield were studied by setting different nitrogen reduction and rhizobia inoculation treatments. Results showed that: In the flowering period, T1 (1/2 N + seed mixing NF), T2 (1/2 N + soil application of NF) and T3 (1/2 N + seed mixing DF) processing of net photosynthetic rate compared with the CK increased by 50.4%, 30.1% and 29.6% respectively, the transpiration rate, intercellular CO2 concentration and stomatal conductance of all treatments increased compared with conventional fertilization (CK), while the chlorophyll content of soybean was not significantly different from CK, dry weight of leaves in each treatment was not significantly different from that of CK,except for T3 treatment, the stem weight of each treatment was not significantly different from that of CK. After entered the podding stage, the intercellular CO2 concentration of T1 and T2 treatment was 34.3% and 47% higher than that of CK respectively, the net photosynthetic rate of each treatment decreased, while the transpiration rate and stomatal conductance were higher than CK, except T4 and T5, the chlorophyll content was not significantly different from that of CK, except T2 treatment, the dry weight of each treatment was lower than that of CK, and the dry weight of stem and pod was higher than CK, different treatment was not significant, dry weight of seed was significantly higher than that of CK in all 1/2 nitrogen application + rhizobium treatment. In the seed filling stage, the difference among net photosynthetic rate, transpiration rate, and CK of each treatment were not significant, and the stomatal conductance was higher than CK, which was not treated with nitrogen fertilizer. The chlorophyll content was significantly lower than that of CK, dry weight of leaves was significantly lower than that of CK, but the stem, pod dry weight were not significantly different from CK and seed dry weight had a certain upward trend, seed dry weight of T3 was 24.6% higher than that of CK. At the full maturity, 1/2 nitrogen reduction + inoculation Rhizobium treatment can basically increase the yield of soybean and its constituent factors especially the T3 treatment increased the yield by 9.75% compared with CK.

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Last Update: 2019-05-30