平衡施肥对木薯产量及品质的影响初报  

Effect of Balanced Fertilization on Yield and Quality of Cassava

作　　者：张永发[1] 杜前进[1] 张冬明[1] 唐树梅[1] 

机构地区：[1]海南大学农学院,海南儋州571737

出　　处：《热带作物学报》2009年第4期435-439,共5页Chinese Journal of Tropical Crops

基　　金：海南重点科技计划项目(No.080402);海南省自然科学基金项(No.808197)资助

摘　　要：采用"3414"完全随机区组设计,开展木薯平衡施肥田间试验,研究施肥对木薯产量及品质的影响。其结果表明:(1)施肥对木薯产量有极显著的增产效应,氮、磷、钾肥增产的主次顺序为K>N>P。(2)木薯最高产量的氮、磷、钾优化施肥组合为N:150.00kg/hm2,P2O5:36.75kg/hm2,K2O:150.00kg/hm2,此时最高产量为36.04t/hm2,其最佳施肥配比为N∶P2O5∶K2O=4∶1∶4;木薯最佳施肥利润的氮、磷、钾优化施肥组合为N:150kg/hm2、P2O5:29.50kg/hm2、K2O:150kg/hm2,其最佳施肥利润达10780.11元/hm2,此时产量为36.00t/hm2,其最佳施肥利润配比为N∶P2O5∶K2O=5∶1∶5。(3)施肥对木薯淀粉含量有极显著的影响,氮、磷、钾肥对木薯淀粉含量影响的主次顺序为:N>K>P。Field trials for balanced application of fertilizer to cassava were carried out by using the 3414 completely random block design to observe cassava yield and quality. Fertilization significantly increased the cassava yield in the order of K > N > P. The NPK combination for the highest yield was N 150 kg/hm2, P2O5 36.75 kg/ha and K2O 150 kg/hm2, and yielded 36.04 t/hm2, with the optimal NPK ratio being N:P2O5 : K2O=4 : 1: 4. The NPK combination for the highest profit was N 150 kg/hm2, P2O5 29.50 kg/hm2...

关 键 词：木薯 平衡施肥 品质 数学模型. 

分 类 号：S533[农业科学—作物学]