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Effects on Agronomic Traits, Yield and Benefit of One-Year Triple Cropping ‘Corn—Soybean’ Intercropping System Under Slow-Release N Fertilizer(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2020年05期
Page:
734-741
Research Field:
Publishing date:

Info

Title:
Effects on Agronomic Traits, Yield and Benefit of One-Year Triple Cropping ‘Corn—Soybean’ Intercropping System Under Slow-Release N Fertilizer
Author(s):
TANG Fu-yue; WEI Qing-yuan; CHEN Wen-jie; GOU Xiao-hong; LIANG Jiang; CHEN Yuan
(Cash Crops Research Institute, Guangxi Academy of Agricultural Sciences/Nanning Comprehensive Station of Nation Soybean Industry Technology, Nanning 530007, China)
Keywords:
Guangxi;  Mazie-soybean;  Intercropping;  Slow-release N fertilizer;  Yield;  Benefit
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2020.05.0734
Abstract:
?In order to provide theoretical and technical basis for the sustainable high yield and efficiency production goal of ‘spring corn‖spring soybean/summer soybean’ of triple crops in one year, random block design with single factor of fertilizer were adopted under the ‘corn—soybean’ wide and narrow row planting mode in this field experiment. Taking the field fertilization as the control(CK), the slow-release N fertilizer was applied in three treatments (T1-T3) of 450, 300 and 150 kg?ha-1 at a time. Slow release N fertilizer and reduced N application were used to evaluate ‘spring corn‖spring soybean/summer soybean’ intercropping system through different quantitative indicators such as agronomy characters, yield and benefit. The results showed that, the application of slow-release N fertilizer the growth stage was delayed for 7 d, pods and seeds per plant increased of spring soybean. The plant height was shortened and the kernels per row decreased of spring maize. The yield of spring soybean increased significantly between 20.81% and 27.67%, the spring corn decreased between 0.79% and 18.33%, summer soybean ranged between -1.80% and 4.54%, the total yield ranged between -8.11% and 0.81%, the total output value increased between 0.20% and 2.10%, and the economic benefit significantly increased between 13.25% and 14.15%. As the N application gone down, there was no change in the growth stage of all crops. Pods and seeds per plant of spring and summer soybean increased.The plant height, ear length, row per ear, seeds per row and 1 000-grain weight of spring maize decreased. The yield of spring corn and total yield were significantly reduced, but the yield of spring soybean, summer soybean and comprehensive economic benefit were increased. Though the slow-release N fertilizer can not meet all goals of increasing yield, but the ecological benefit and economic benefit increased. The yield of spring corn was reduced by 0.79% in T1 treatment, with the least and no obvious reduction, and the total yield of soybean and corn increased and the economic benefit increased significantly, which could be popularized and applied in Guangxi.

References:

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Last Update: 2020-10-21