高产杂交籼稻新组合“特优649”产业化技术研究I密度及主要肥料因子对产量的影响  

Study on the Techniques for Commercial Production of the High and Stable Yielding Indica Hybrid Rice New Combination "Te You 649" I The Effect of Plant Density and Major Fertilizer Factors on the Yield

作　　者：李维科[1] 黄英美[1] 

机构地区：[1]广西农科院水稻研究所,南宁530007

出　　处：《中国农学通报》2006年第4期188-190,共3页Chinese Agricultural Science Bulletin

基　　金：广西区科技厅"十五"育种攻关课题"杂交水稻新组合选育"(0133005-I);广西区科技厅专用型农作物新品种产业化技术研究"高产优质水稻新品种产业化技术研究"(0537007-1)。

摘　　要：试验采用裂区设计,以肥料为主区,密度为副区,研究高产杂交籼稻新组合“特优649”的密度和氮肥、磷肥、钾肥施用量与产量的关系,结果表明:当密度为37.5万(/hm2,或株行距为20cm×13.2cm,氮肥施用量为225kg纯氮/hm2,其N,P2O5,K2O的比例为1.0:0.5:0.8时,产量最高,平均达9.24t/hm2,最高达9.36t/hm2。据此提出产量指标为9.0t/hm2以上的优化农艺措施组合为:每hm2密度37.5万(,每(插2粒谷秧,纯氮用量225kg,P2O5用量112.5kg,K2O用量180.0kg,其中基肥为猪牛粪22.5t+30kg过磷酸钙;试验还提出了相配套的水分运筹方法。The experiment was designed the split-plot with fertilizers as main plots and plant densities as subplots. The trial was designed to test the effect of three plant densities on the subsequent production of ＂Te You 649＂ at two levels of nitrogen fertilization. The result showed that the yield reached the highest, 9.36t/ha, when the plant density was 375,000 hills/ha （plant spaeing=20cm×13.2cm） at the nitrogen fertilization of 225kg. Accordingly, a desirable agronomic measure combination for attaining a grain yield of above 9.0t/ha was proposed to be 375,000 hills/ha of plant density with 2 grain-seedling per hill, 225kg pure nitrogen/ha, 112.5kg P2O5/ha and 180kg K2O/ha. A package water management method was also introduced.

关 键 词：杂交水稻 特优649 产业化技术 

分 类 号：S318[农业科学—作物栽培与耕作技术] S511.048[农业科学—农艺学]