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作 者:梁李宏[1] 梁林洲[2] 梅新[1] 黄伟坚[1] 张中润[1]
机构地区:[1]中国热带农业科学院热带作物品种资源研究所,海南儋州571737 [2]中国科学院南京土壤研究所,南京210008
出 处:《华南热带农业大学学报》2007年第4期6-10,共5页Journal of South China University of Tropical Agriculture
基 金:科技部农业科技成果转化资金项目;编号:03EFN214600209。
摘 要:通过连续3年对海南省陵水县英州镇腰果无性系FL30果园进行生产性水平施肥试验和氮磷钾肥配施的正交施肥试验对植株增产效果的研究,结果表明:单一施氮肥而不施磷钾肥,无增产效果;氮磷钾肥配施能显著地促进植株生长和提高腰果产量;在植株盛花坐果期(注:腰果植株的盛花和坐果是同时期的),氮素是影响腰果产量的主要营养元素,叶片氮素含量与植株腰果产量呈直线显著正相关;在低氮情况下,施磷钾肥的增产效果不明显。Three years' continuous observation and orthogonal design of NPK fertilizers were conducted at the Cashew Clone FL30 garden in Yingzhou Town, Lingshui county of Hainan province to study the increase of cashew production. The results show that single application of nitrogen without phosphorus and potassium has no influence on icreasing yield, mixture of NPK could promote plant growth and increase output significantly, and during the stage of florescence and fruition, nitrogen is one of main elements which could influence cashew yield and the nitrogen concentration of foliage has remarkably positive correlation with cashew yield, and the effect of application of PK on increasing production is slight under low Nitrogen application
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