杂交水稻‘天优998’营养特性和施肥效应研究  

Study on the Nutrition Characteristics and the Fertilizer Effect of Hybrid Rice‘Tian-you 998’

作　　者：彭智平[1] 黄继川[1] 李小利 于俊红[1] 李文英[1] 林志军[1] 杨林香[1] 

机构地区：[1]广东省农业科学院土壤肥料研究所广东养分资源循环利用与耕地保育重点实验室,广州510640 [2]兴宁福兴农业站,广东兴宁福兴514521

出　　处：《中国农学通报》2011年第5期223-227,共5页Chinese Agricultural Science Bulletin

基　　金：国家科技支撑计划"华南地区区域测土配方施肥技术研究―高效施肥关键技术研究与示范项目"(2008BADA4B04-09)

摘　　要：对水稻‘天优998’进行了营养特性和施肥效应研究。结果表明,在施肥量为N157.5kg/hm2、K2O75kg/hm2时产量最大;该品种对钾肥的需求量最大,对氮、磷和钾的带走量为1:0.55:2.68;与钾肥相比氮肥对‘天优998’的产量和农艺性状影响较大,是决定产量和农艺性状的关键养分因子;‘天优998’对大量元素的吸收主要集中在分蘖盛期至抽穗期,对锌的吸收主要集中在后期,而对其他中微量元素的吸收主要集中在中期。研究结果对‘天优998’的科学施肥管理提供了理论基础。The nutrition characteristics and the fertilizer effect of ‘ Tian-you 998 ’ were studied in this paper. The results showed that the yield was highest when 157.5 kg/hm 2 N and 75 kg/hm 2 K 2 O were applied. The demand of potassium was more than phosphate and nitrogen and the N, P 2 O 5 and K 2 O were took away in ratio of 1：0.55：2.68. The influence of nitrogen on yield and agronomic characters of ‘ Tian-you 998 ’ was clearly than that of potassium, It was the key nutrient factor for yield and agronomic characters. The absorption of nitrogen, phosphorus and potassium concentrated in the tillering stage to heading stage, absorption of zinc mainly in the latter stage of growth period while the other trace elements concentrated in the medium term. This results provided a theoretic basis for scientific fertilizer management of ‘ Tian-you 998 ’ .

关 键 词：'天优998’ 营养特性 施肥效应 

分 类 号：S147.3[农业科学—肥料学]