摘要
为筛选出适宜在桂中地区甘蔗非榨季种植并收获的甜高粱品种,明确其最佳播期,研究以‘甜35’和‘考利’为试材,设置S1(3月30日)、S2(4月30日)、S3(5月30日)、S4(6月30日)和S5(7月30日)5个播期,测定了不同播期下甜高粱的生育期、茎秆产量、叶片产量、籽粒产量、茎秆糖锤度和总糖产量。结果表明:播期显著影响出苗—挑旗期、开花—完熟期和全生育期,其中播期S3的全生育期最短;随着播期推迟,2个品种的茎秆产量和叶片产量先增加后减少且均在S3获得最高产量,‘甜35’和‘考利’分别在播期S4和播期S5获得最高籽粒产量;各播期‘甜35’的茎秆糖锤度峰值出现于完熟期或之后,而随着播期推迟,‘考利’的茎秆糖锤度峰值可提前至乳熟期;各播期‘考利’的总糖产量和理论乙醇产量均显著高于‘甜35’,且‘考利’在播期S3的总糖产量和理论乙醇产量均显著高于其他播期。因此,建议南方蔗区甘蔗非榨季优先种植晚熟品种‘考利’,其适宜播期为S3(5月30日)。
The purpose of the present study was to screen out the sweet sorghum variety suitable to be planted and harvested during the non-crushing season of sugarcane in central Guangxi and clarify the optimum sowing date.‘Tian 35’and‘Kaoli’were sown on five dates(S1:March 30;S2:April 30;S3:May 30;S4:June 30;S5:July 30).The growth period,stem yield,leaf yield,grain yield,stem brix,and total sugar yield were determined.The results showed that sowing date significantly affected the growth period by influencing the stages from emergence to flag leaf expansion and from flowering to full maturity and the whole growth period,and the shortest whole growth period was found under the S3 treatment.As the sowing date was postponed,the stem and leaf yields of the two varieties firstly increased and then decreased,being the highest under the S3 treatment,The highest grain yields of‘Tian 35’and‘Kaoli’were observed under S4 and S5 treatments,respectively.Under all treatments,the stem brix peak of‘Tian 35’appeared at the full maturity stage or thereafter.However,the appearance of the maximum stem brix of‘Kaoli’was advanced to the milk ripe stage as the sowing date was postponed.Under all treatments,the total sugar yield and theoretical ethanol yield of‘Kaoli’were significantly higher than those of‘Tian 35’.Moreover,the total sugar yield and theoretical ethanol yield of‘Kaoli’under the S3 treatment were significantly higher than those under other treatments.According to the results,it is suggested that the late-maturing variety‘Kaoli’serves as a candidate to be planted during the non-crushing season of sugarcane in southern China,and May 30 is the optimum sowing date for this variety.
作者
白彩虹
李杏艳
张彩
吴卓宣
梁永晶
梁琦奔
葛耀相
BAI Cai-hong;LI Xing-yan;ZHANG Cai;WU Zhuo-xuan;LIANG Yong-jing;LIANG Qi-ben;GE Yao-xiang(College of Smart Agriculture,Yulin Normal University,Yulin 537000,PRC;Guangxi Colleges and Universities Engineering Research Center of Facility Agriculture,Yulin Normal University,Yulin 537000,PRC)
出处
《湖南农业科学》
2025年第4期1-5,共5页
Hunan Agricultural Sciences
基金
国家自然科学基金项目(32260534,32460465)
广西科技计划基地和人才专项(桂科AD20238066,桂科AD20230877)
玉林师范学院高层次人才项目(G2019ZK40,G2019ZK45)
玉林师范学院大学生创新创业计划项目(202210606215,S202410606159)。
关键词
甜高粱
播期
产量
糖锤度
sweet sorghum
sowing date
yield
brix
