施氮量对新疆不同品质类型春小麦品种籽粒灌浆特征和产量的影响  

Effect of Different Amounts of Nitrogen Application on Grain Filling and Yield of Wheat Cultivars with Different Qualities

作　　者：侯丽丽[1] 王伟[1] 贾永红[2] 雷荣[1] 刘旭欢[1] 石书兵[1] 

机构地区：[1]新疆农业大学农学院,乌鲁木齐830052 [2]新疆农业科学院奇台麦类试验站,新疆奇台831800

出　　处：《西北农业学报》2013年第5期15-19,共5页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：科技富民强县专项行动计划"百万亩优质小麦技术集成及产业水平提升"

摘　　要：在大田条件下,研究氮肥用量对不同品质类型春小麦籽粒灌浆和产量的影响。结果表明,在各施氮处理中,不同品质类型春小麦品种籽粒灌浆过程均呈"S"型变化。随着灌浆时间的推移,籽粒干物质均有不同程度增加,籽粒干物质积累表现为新春6号>新春27号>Y-20。籽粒灌浆速率大致呈先增加后下降的变化趋势,但在N2处理下,Y-20和新春6号都出现先增加后略降低又快速增加最后降低的变化趋势。用Lo-gistic方程对籽粒干物质积累进行拟合,3个品种均在N1处理下有最大灌浆速率和最大快速积累期总量。小麦籽粒灌浆特征参数均与千粒质量呈正相关,其中平均灌浆速率、快速积累期总量与千粒质量呈极显著正相关。3个品种实际产量均在N2处理下达到最大,表现为新春6号>新春27号>Y-20。The effects of different amounts of nitrogen application on grain filling and yield of spring wheat cultivars with different quality types were studied in the field test condition. The results showed that the grain filling process of different quality types of spring wheat cultivars in all N treatments showed ＂S＂ shape change. Grain dry matter increased with the plant growing, and the grain dry matter accumulation amount was Xinchun 6 〉 Xinchun 27〉 Y-20. Grain filling rate firstly increased then decreased roughly. But in N2 treatment, Y-20 and Xinchun 6 increased firstly then followed by a slight reduce and a rapid increase, and then decreased at last. Logistic equation fitting of the grain dry matter accumulation showed that the maximum vm and maximum GT for three cultivars occurred under N1 treatment. Wheat grain filling parameters were positively correlated with grain mass, and were significantly and positively correlated with the average filling rate v, the total GT of rapid accumulation period and grain mass. The actual yield of three cultivars reached the maximum under N2 treatment, in an order as Xinchun 6〉 Xinchun 27〉 Y-20.

关 键 词：施氮量 春小麦品种 灌浆特征 LOGISTIC方程 

分 类 号：S512.12[农业科学—作物学]