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Path Analysis on Black Soil Fertility via Soybean Yield and Quality(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2021年01期
Page:
89-97
Research Field:
Publishing date:

Info

Title:
Path Analysis on Black Soil Fertility via Soybean Yield and Quality
Author(s):
WEI Dan;  CAI Shan-shan;  WANG Wei;  DING Jian-li;  JIN Liang;  LI Yu-mei;  LI Yan;  HU Yu
（1.Institute of Plant Nutrition and Resources, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China; 2.College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China; 3.College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China; 4.Institute of Soil Fertilizer and Environmental Resources, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China）
Keywords:
Soil fertility;  Soybean yield;  Soybean quality;  Multiple stepwise regression;  Path analysis
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2021.01.0089
Abstract:
This paper analyzed the effect of black soil fertility on soybean yield and quality in order to adjust the yield and quality of soybean. Black soil sloping farmland was used as the research basis, single fertilizer application (no organic materials) was used as the control, and the soil was fertilized with organic fertilizer, straw and biochar. Correlation analysis, multiple stepwise regression and path analysis were used to study the change of fertility of black soil and its effect on soybean yield and quality. The results showed that the organic carbon content of soil increased by 8.23%-15.01%, the yield increased by 10.89%-19.00% on average, and the protein content of soybean increased by 1.24%-2.05% under three treatments of organic fertilizer. The direct and indirect effects of organic carbon on soybean yield were strong. Soil fertility influenced soybean quality through direct and indirect effects, which could jointly explain 78.0%-99.2% of the variation of soybean quality and yield characters, but the action mechanism and influence intensity of each fertility factor were different. Soil total nitrogen showed a directly positive effect (0.366) in soybean protein content, but a directly negative effect(-0.892, -0.270) in soybean fat and ash content. The available potassium showed a strong directly positive effect (1.605, 1.406) in protein and fat content of soybean, and a directly negative effect (-1.465) in ash content of soybean. Soil fertility, soybean yield and quality were improved under three fertilization measures. Soil total nitrogen and available potassium all played a strong leading role in the changes of soybean yield and protein, fat, and ash content of soybean. The direct and indirect effects of soil available phosphorus, organic carbon and total potassium are also the main factors of soybean yield and quality variation.

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Last Update: 2021-02-09