|Table of Contents|

Effects of Rare Earth Lanthanum and Cerium on Pod Dry Matter and Grain Nitrogen Accumulation of Soybean in Northeast China(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2018年03期
Page:
385-392
Research Field:
Publishing date:

Info

Title:
Effects of Rare Earth Lanthanum and Cerium on Pod Dry Matter and Grain Nitrogen Accumulation of Soybean in Northeast China
Author(s):
LI Hao-yang1;  ZHANG Xing-wen2;  CHEN Hai-yan1;  BAI Lu1;  TAO Pei1;  MIAO Yan-li1;  REN Hong-yu1
(1.College of Resources and Environmental Sciences, Northeast Agricultural University, Harbin 150030, China; 2.College of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China)
Keywords:
Lanthanum;  Cerium;  Soybean;  Nitrogen accumulation;  Dry matter accumulation
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2018.03.0385
Abstract:
In order to study the dynamic effect of rare earth elements on dry matter accumulation in soybean pods and nitrogen accumulation in soybean seeds, find the relationship between dry matter and nitrogen accumulation and yield formation, Dongnong 42 (high-protein), Dongnong 47 (high-fat) and Dongnong 52 (intermediate) of different genotypes in Northeast China were used as experimental materials. The samples were tested by spraying different concentrations of LaCl3, CeCl3 and LaCl3+CeCl3 solution on the leaves in the seedling stage and flowering stage, and measured the changes in dry matter and nitrogen accumulation from pod to maturity in soybean. The results showed that the main accumulation period of dry matter and nitrogen was 20-40 days after initial pod, and then the accumulation rate slowed down, showing a slow-fast-slow growth trend. Suitable concentrations of rare earths solution could increase the dry matter and nitrogen accumulation and the yield of soybean, the effects of rare earth elements on dry matter and nitrogen accumulation were different due to different soybean genotypes. Under the treatment of 60 mg·L-1 CeCl3, the total amount of dry matter and nitrogen accumulation and yield of Dongnong 42 were the highest, and significantly increased by 22.66%, 38.41% and 39.48% compared with the control. Under the treatment of 30 mg·L-1 CeCl3, the three indexes of Dongnong 47 were the highest, with a significant increase of 18.71%, 31.62% and 29.62% compared with the control. Under the treatment of 30 mg·L-1 CeCl3, the three indexes of Dongnong 52 were the highest, the total amount of nitrogen accumulation was significantly increased by 13.10% compared with the control, and the dry matter and yield increased 6.80%, 4.20% respectively, but the difference were not significant. Therefore, the treatment effect of rare earth cerium was the best, and Dongnong 42 had the largest increase in all indicators.

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Last Update: 2018-06-08