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甘蔗的不同生长发育阶段,均会遭到一种或多种害虫的为害:如甘蔗苗期,蔗瞑幼虫及地下害虫从近地面叶鞘处蛀入茎内及根部进行为害,造成枯心苗,以致全株枯死,在甘蔗生长中后期,幼虫从蔗茎地上都蔗芽或根部生长带侵入造成螟害节,据笔者在仙游惠安等地调查得出,常年蔗螟为害造成格心苗率平均为5-8%,螟害节率为7—13%,甘蔗受害后蔗茎产量减少约为3-5%,糖产量降低1%以上(绝对值),且增加蔗茎的纤维含量,影响蔗糖的质量。甘蔗病虫害的综合防治措施:1.选用经济性状符合生产要求的耐虫、抗虫良种如闽选203、闽选263等,实行早… 相似文献
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条螟(Proceras Venosatus walker)是为害甘蔗的主要蔗螟之一。甘蔗从苗期到生长中后期均受到条螟的为害,苗期受害造成桔心苗,伸长拔节后受害造成梢枯(死尾)或螟害节,对甘蔗的产量和糖份影响均很大。广东的珠江三角洲蔗区,进入七十年代以来,随着高产良种粤糖57/423的推广,条螟的为害也比过去日趋严重,一般产量损失15—20%。因此条螟在种植粤糖57/423为主的蔗区,已经成为影响甘蔗产量的一个主要因素。近年来我们在条螟为害较为严重的番禺县东冲公社和鱼涡头公 相似文献
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广东省湛江蔗区在六十年代中期通过多点试验和示范,找出了在甘蔗下种时蔗沟施六六六防治苗期蔗螟的方法,它对压低苗期螟害枯心有十分显著的效果。加上简便易行、兼治多虫、保护天敌、增产增收等优点,因而深受广大贫下中农的欢迎,能够短期内迅速地在蔗区中推广开来。对虫口夺蔗,增加产量,起了一 相似文献
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试论广西蔗糖产业可持续发展战略 总被引:1,自引:0,他引:1
作者从蔗糖产业可持续发展和提高蔗糖产业国际竞争力的战略高度,实事求是地总结了广西蔗糖产业取得的成绩、存在的问题以及面临的新形势和新任务,并对当前和今后一个时期如何促进广西蔗糖产业可持续发展进行了认真的分析和探讨,特别是从战略高度提出了促进广西蔗糖产业可持续发展的6项措施:即实施高糖高产甘蔗新品种带动战略;实施蔗糖高产甘蔗种植示范带动战略;实施甘蔗全程机械化带动战略;实施甘蔗专业户规模经营带动战略;实施蔗糖产业化服务带动战略;实施对外交流与合作带动战略。6项战略措施的提出,对于当前和今后一个时期促进广西蔗糖产业乃至全国蔗糖产业的可持续发展,都具有十分重要的指导意义和参考意义。 相似文献
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甘蔗品种开花对工农艺性状的影响 总被引:2,自引:0,他引:2
通过在内陆具有得天独厚甘蔗开花条件的云南瑞丽蔗区进行调查.甘蔗开花可导致甘蔗糖分降低和蔗茎产量损失的情况并不存在。相反,即使花期长达150天的甘蔗品种,仍能继续完成蔗糖分的积累,达到高糖。 相似文献
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在霜冻蔗区,甘蔗必须窖种越冬。而蔗梢留种栽培是一项省工,省种,省成本,增产,增糖,增效益的技术,值得大力推广。 相似文献
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R. V. S. Amorim W. M. Ledingham J. F. Kennedy G. M. Campos-Takaki 《Food Biotechnology》2006,20(1):43-53
A strain of Syncephalastrum racemosum isolated from herbivores feces was studied for chitosan production using sugar cane substrates, such as juice or molasses, from Northeast Brazil. S. racemosus was batch grown in shake flasks over 5 days using sugar cane juice or molasses as carbon source. The effect of supplementary nitrogen source was studied by supplying medium with yeast extract or ammonium sulphate. The highest yield of the biopolymer (30 mg chitosan. g-1 sucrose) was obtained using sugar cane juice (21 g sucrose. L-1) plus 0.3% yeast extract. Batch fermentation in a 5-L bioreactor using the same medium, increased the yield to 50 mg chitosan. g-1 sucrose. Chitosan extracted from S. racemosus cultured in sugar cane juice medium showed a low degree of acetylation with a high D-glucosamine content. 相似文献
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A strain of Syncephalastrum racemosum isolated from herbivores feces was studied for chitosan production using sugar cane substrates, such as juice or molasses, from Northeast Brazil. S. racemosus was batch grown in shake flasks over 5 days using sugar cane juice or molasses as carbon source. The effect of supplementary nitrogen source was studied by supplying medium with yeast extract or ammonium sulphate. The highest yield of the biopolymer (30 mg chitosan. g?1 sucrose) was obtained using sugar cane juice (21 g sucrose. L?1) plus 0.3% yeast extract. Batch fermentation in a 5-L bioreactor using the same medium, increased the yield to 50 mg chitosan. g?1 sucrose. Chitosan extracted from S. racemosus cultured in sugar cane juice medium showed a low degree of acetylation with a high D-glucosamine content. 相似文献
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Maciej Wojtczak Aneta Antczak Krystyna Lisik 《International Journal of Food Properties》2013,16(3):610-616
Contrary to beet sugar, which on the market is used practically only as white sugar, cane sugar is used in a wide range of products for direct consumption. This article presents results of determination of starch content in different types of cane sugars: raw cane sugar, refined white cane sugar, plantation white sugar, and commercial “unrefined” brown and yellow sugars. The content of starch in various “brown” cane sugars ranged from 74 to 415 mg/kg, while in white sugars its content ranged from 51 to 214 mg/kg. The starch content in cane sugars should be an important criterion for the quality of cane sugars, which allowed to differentiate cane sugars from beet sugar containing no starch. 相似文献