不同施肥条件下巴西陆稻IAPAR9的养分吸收特性研究  

Studies on the main nutrition absorptionalcharacteristics of Brazilian upland riceIAPAR9 under different fertilization condition

作　　者：李军民[1] 周清明[2] 唐浩[3] 

机构地区：[1]湖南农业大学研究生处 [2]湖南农业大学湖南长沙410128 [3]农业部科技发展中心北京100026

出　　处：《佛山科学技术学院学报（自然科学版）》2003年第1期60-63,共4页Journal of Foshan University(Natural Science Edition)

摘　　要：巴西陆稻植株在移栽期—分蘖盛期的氮、磷、钾吸收量较少 ,分别占其吸收总量的 1 7.1 % ,1 2 .8% ,1 3 .0 % ,在分蘖盛期—孕穗期氮磷钾吸收量比重最大 ,分别占其吸收总量的 5 0 .1 % ,5 3 .7% ,48.7%左右。氮、磷、钾用量与土壤碱解氮、有效磷、速效钾 ,以及植株氮、磷、钾吸收总量呈极显著正相关 ,氮肥用量与植株钾素吸收总量亦呈极显著正相关。在中氮、磷、钾水平下 ,吸肥优势明显 。N, P, K absorbed by Brazilian upland rice IAPAR9 plant during the transplanting to maximum tillering stage (17.1%, 12.8%, 13.0% in total N, P, K absorbed) were little. The peaks of N, P, K absorbing rate occurred (50.1%, 53.7%, 48.7% in total N, P, K absorbed) during maximum tillering stage booting stage.N,P,K application rates are significantly and positively correlated with AN, AP, AK in soil and with N,P,K absorbed by plants. There is a superiority of N, P, K uptake and high dry matter accumulation at intermediate N, P, K supply levels.

关 键 词：巴西陆稻 IAPAR9 养分吸收特性 施肥条件 氮 磷 钾 移栽期 分蘖盛期 孕穗期 吸收量 

分 类 号：S511.310.6[农业科学—作物学] Q945.12[生物学—植物学]