湖北省莲藕磷肥合理用量研究  

Study on Rational Phosphorus Fertilizer Application Dose on Rhizome Lotus in Hubei Province

作　　者：刘冬碧[1] 丁亨虎 胡中立[3] 吴家琼 刘克芝 余延丰[1] 熊桂云[1] 

机构地区：[1]湖北省农业科学院植保土肥研究所,武汉430064 [2]湖北省潜江市农业局,湖北潜江433100 [3]武汉大学生命科学学院,武汉430072

出　　处：《湖北农业科学》2012年第21期4744-4748,共5页Hubei Agricultural Sciences

基　　金：国家科技支撑计划项目(2012BAD27B02);湖北省农业科技创新中心资助项目(2011-620-003-03-05);国际植物营养研究所资助项目(IPNI-HB-24)

摘　　要：采用田间小区试验研究了莲藕磷肥合理用量,试验结果表明,在理论产量基本相等的条件下,采用线性+平台模型得到的莲藕临界施磷量(P2O568.8～106.9 kg/hm2),大大低于用二次型模型得到的莲藕最佳经济施磷量(P2O5117.6～144.0 kg/hm2),根据湖北莲藕生产和施肥现状以及藕田土壤磷素肥力水平,提出湖北莲藕磷肥(P2O5)合理用量为75.0～120.0 kg/hm2,平均为90.0 kg/hm2。Rational phosphorus fertilizer application dose on rhizome lotus was studied by field experiments.The results showed that under the condition on nearly equal theoretical rhizome lotus yield,the critical value of P2O5 application dose determined by linear ＋ plateau model（68.8～106.9 kg/hm2） was greatly lower than the optimum economic P2O5 application dose determined by quadratic model（117.6～144.0 kg/hm2）.According to the present status of rhizome lotus production,and taking fertilization of farmer practice and lotus field soil P fertility into consideration,rational P2O5 application dose on rhizome lotus in Hubei province was suggested to be 75.0～120.0 kg/hm2 with an average of 90.0 kg/hm2.

关 键 词：莲藕 磷肥 合理用量 

分 类 号：S147.5[农业科学—肥料学]