Li W F, Zhang R Y, Huang Y K, Pu C H, Yin J, Cang X Y, Shan H L, Wang X Y, Luo Z M
Yunnan Key Laboratory of Sugarcane Genetic Improvement,Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences,Kaiyuan 661699,China.
Yunnan Academy of Agricultural Sciences,Kunming 650205,China.
Bull Entomol Res. 2018 Feb;108(1):125-129. doi: 10.1017/S0007485317000608. Epub 2017 Jul 11.
Ceratovacuna lanigera Zehntner is a major leaf pest of sugarcane. Widely distributed, it affects both the yield and quality of sugarcane in China. This study aimed to assess real yield and sugar yield losses, and the effect of C. lanigera damage on emergence of newly planted and ratoon cane under current production levels. Field experiments were carried out from 2014 to 2016 in Yunnan Province China. At maturity, plants were harvested and weighed to determine yield, and the effect on sugarcane quality and sucrose content analyzed. Real yield decreased by average of 46,185 kg hm-2 (range: 37,545-61,845 kg hm-2) in damaged versus undamaged areas, with an average yield loss rate of 35.9% (28.5-45.7%). Juice yield decreased by an average of 3.01% (2.4-4.13%) and sucrose content by 6.38% (5.48-8.16%). Juice brix decreased by an average of 7.66°BX (6.95-9.05°BX) and juice gravity purity by 12.35% (8.43-19.97%). In contrast, the reducing sugar content increased by an average of 1.21% (1.01-1.3%). Emergence rates of newly planted cane decreased by an average of 26.0% (24.7-27.3%). The emergence number of ratoon cane decreased by 66,834 hm2 (57,429-76,238 hm-2) and relative emergence loss rates of ratoon cane decreased by an average of 57.8% (57.6-58.0%). These findings confirm that C. lanigera damage severely affects sugarcane yield and quality in Yunnan Province. The results will help the implementation of effective control measures, thereby supporting sustainable development of the Chinese sugar industry.
蔗扁蛾是甘蔗的一种主要叶部害虫。它分布广泛，影响着中国甘蔗的产量和品质。本研究旨在评估实际产量和糖分产量损失，以及在当前生产水平下蔗扁蛾为害对新植蔗和宿根蔗出苗的影响。2014年至2016年在中国云南省进行了田间试验。在甘蔗成熟时，收割植株并称重以确定产量，并分析其对甘蔗品质和蔗糖含量的影响。与未受害区域相比，受害区域的实际产量平均下降了46185千克/公顷（范围：37545 - 61845千克/公顷），平均产量损失率为35.9%（28.5 - 45.7%）。蔗汁产量平均下降了3.01%（2.4 - 4.13%），蔗糖含量下降了6.38%（5.48 - 8.16%）。蔗汁锤度平均下降了7.66°BX（6.95 - 9.05°BX），蔗汁重力纯度下降了12.35%（8.43 - 19.97%）。相比之下，还原糖含量平均增加了1.21%（1.01 - 1.3%）。新植蔗的出苗率平均下降了26.0%（24.7 - 27.3%）。宿根蔗的出苗数减少了66834株/公顷（57429 - 76238株/公顷），宿根蔗的相对出苗损失率平均下降了57.8%（57.6 - 58.0%）。这些研究结果证实，蔗扁蛾为害严重影响云南省甘蔗的产量和品质。研究结果将有助于实施有效的防治措施，从而支持中国制糖业的可持续发展。
