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Journal of Agriculture ›› 2019, Vol. 9 ›› Issue (9): 17-22.doi: 10.11923/j.issn.2095-4050.cjas18070016

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Research and Benefit Analysis of Directly Replanting Seed Cane in GT42 Ratoon: An Example of Xiangzhou, Guangxi in 2017

  

  • Received:2018-07-15 Revised:2018-10-22 Accepted:2018-10-25 Online:2019-09-16 Published:2019-09-16

Abstract: We studied the effects of directly replanting GF98-296 seed cane in GT42 ratoon on agronomic traits of sugarcane, aiming to solve the problem of plant missing in sugarcane ratoon by using GF98-296. Three treatments were designed, which were directly replanting seed cane of GF98-296 in GT42 ratoon (A), directly replanting seed cane of GT42 in GT42 ratoon (B) and natural ratoon of GT42 (CK). Seed cane replanting was carried out in 1-4 leaf stage of GT42 ratoon, the agronomic traits of all treatments were investigated and the economicbenefitswereanalyzedinharveststage.TheresultsshowedthattheyieldofAtreatmentwas 77.93t/hm2, increased by 22.18% and 34.03% respectively compared with 14.15 t/hm2 of B treatment and 19.79 t/hm2 of CK. The difference between the yield of B and CK was not significant. Directly replanting treatment did not affect the growth, effective stem, yield and sucrose content of GT42. The sucrose content of GF98-296 in A treatment was slightly higher than that of GT42. Directly replanting GF98-296 seed cane in GT42 ratoon could increase the income by 5506.6 yuan/hm2 for sugarcane farmers, increase industrial output by 14813.2 yuan/hm2 for sugar enterprise. GF98-296 is suitable for directly replanting in GT42 ratoon, and this new technology should be demonstrated and promoted.

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