等量紫云英条件下化肥用量对早稻养分吸收和干物质积累的影响  

Effects of Applying Mineral Fertilizer Reasonably on Nutrient Absorption and Dry Matter Accumulation of Early Rice under Applying Equivalent Astragalus sinicus

作　　者：徐昌旭[1] 谢志坚[1] 许政良[2] 苏全平[1] 李水荣[2] 秦文婧[1] 

机构地区：[1]江西省农业科学院土壤肥料与资源环境研究所,江西南昌330200 [2]江西省丰城市农业技术推广中心,江西丰城331100

出　　处：《江西农业学报》2010年第10期13-14,23,共3页Acta Agriculturae Jiangxi

基　　金：农业部公益性行业(农业)科研专项(200803029)

摘　　要：在施用等量紫云英条件下进行了不同化肥用量对早稻养分吸收和干物质积累影响的田间试验。试验结果表明:在翻压紫云英22500kg/hm2的条件下,早稻田可减少化肥用量20%～60%,但是以减少化肥用量20%的效果最佳,能有效促进水稻植株地上部对N、P、K养分的吸收与积累,同时有利于地上部干物质的积累。A field experiment was carried out to study the effects of applying mineral fertilizer reasonably on the nutrient absorption and dry matter accumulation of early rice under the condition of applying equivalent green manure(Astragalus sinicus).The results indicated that the application rate of chemical fertilizer could be reduced by 20%-60% under the condition of applying 22500 kg/hm2 A.sinicus,and reducing 20% chemical fertilizer had the best effect because it could effectively promote the overground part of rice plants to absorb N,P and K nutrient and accumulate the dry matter.

关 键 词：紫云英 条件 化肥用量 早稻田 养分吸收 干物质积累 ASTRAGALUS SINICUS Early Rice Dry Matter Accumulation Nutrient Absorption 地上部干物质 吸收与积累 效果最佳 田间试验 水稻植株 试验结果 施用 

分 类 号：S[农业科学]