Analysis of Agronomic Characters and Agricultural Economic Benefits of Directly Replanting of the 3<sup>nd</sup> Year Ratoon Sugarcane

JIANG Zhuhui; ZHOU Huiwen; YAN Haifeng; LIANG Xueyou; SONG Shi; WEI Zhiying; QIN Lei; XIONG Faqian; QIU Lihang; YOU Jianhua

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JIANG Z H, ZHOU H W, YAN H F, et al. Analysis of Agronomic Characters and Agricultural Economic Benefits of Directly Replanting of the 3nd Year Ratoon Sugarcane [J]. Fujian Journal of Agricultural Sciences，2024，39（2）：1−10

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JIANG Z H, ZHOU H W, YAN H F, et al. Analysis of Agronomic Characters and Agricultural Economic Benefits of Directly Replanting of the 3^nd Year Ratoon Sugarcane [J]. Fujian Journal of Agricultural Sciences，2024，39（2）：1−10

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Analysis of Agronomic Characters and Agricultural Economic Benefits of Directly Replanting of the 3^nd Year Ratoon Sugarcane

1.
Guangxi sugar industry group, Guangxi Nanning　530022
2.
Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs/Guangxi Key Laboratory of Sugarcane Genetic Improvement, Guangxi Nanning　530007
3.
Liujiang district sugarcane technology promotion station, Guangxi Liuzhou　545100
4.
Liangqing town agricultural service center of Liangqing District in Nanning City, Guangxi Nanning　530201
5.
Sugarcane Technology Extension Station of Xingbin District in Laibin City, Guangxi Laibin　546138

Received Date: 2023-10-15
Rev Recd Date: 2023-12-18

Available Online: 2024-03-28

Abstract

Abstract

Abstact: Objective In order to provide a basis for further promoting the new technology of extending the ratoon sugarcane seed stalk by direct replanting, the effects of extending the second year of ratoon on the traits and yield of sugarcane varieties were studied. Method GL2, GT44 and YT236, three major sugarcane varieties in Guangxi Province, were taken as the replanted population in the second year of ratoon. GF296 seed stalks were used for the direct replanting treatment on the ridge and furrow sugarcane beds with cultivated resistance and the non-replanted population was the control (CK), and the important agronomic traits and sucrose content of the replanted and non-replanted populations were determined at the harvest stage of the 3rd, 4th and 5th year of ratoon, respectively, and the economic benefits were measured. Result The number of effective stems of GL2, GT44 and YT236 after replanting was significantly higher than that of CK. The yield of CK decreased with the extension of permanent root years, and the population yield increased with the extension of permanent root years after replanting, but there was no significant difference in other agronomic traits. The effective stem number of GL2, GT44 and YT236 populations without replanting was negatively correlated with the ratoon years, which were −0.907, −0.931 and −0.756, respectively. The yield was also significantly negatively correlated with the years of ratoon roots, which were −0.915, −0.905 and −0.930, respectively. The results showed that the ratoon years of three varieties were not negatively correlated with yield and number of effective stems, indicating that the ratoon years of sugarcane could be extended after replanting. At the same time, the economic benefits of GL2, GT44 and YT236 groups also increased after replanting, and their total net income increased by 48120.80 yuan /hm2, 46765.80 yuan /hm2 and 42398.60 yuan /hm2 during the three-year ratoon period, respectively. Conclusion Directly replanting of GF296 could effectively extend the years of ratoon for 3 years, which was cost-effective in terms of economic benefit comparison and suitable for large-scale promotion. Therefore, this study provides a theoretical basis for constructing high and stable yield population, realizing the potential of sugarcane ratoon, and realizing stable and high yield.
- directly replanting with stem,
- ratoon sugarcane,
- the year of ratoon,
- yield,
- economic benefit

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References(20)

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