多效唑对蓝茎冰草种子产量的影响  

The Effects of Paclobutrazol (PP333) on the Seed Yield for Western Wheatgrass

作　　者：李世忠 赵涛 柏永华 张中华 

机构地区：[1]宁夏农业勘查设计院,银川750002

出　　处：《西北农业学报》2008年第2期313-316,共4页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：国家"948"重大项目专题"牧草种子生产的研究与示范"(202009)

摘　　要：在甘肃省酒泉地区研究较高施氮水平上多效唑不同施用时期和不同施用量对蓝茎冰草种子产量及其构成要素的影响。结果表明,在三叶期喷施多效唑2.40 kg ai./hm2时实际种子产量最高,喷施时期越滞后,喷施量越少,实际种子产量就越低。多效唑的施用显著影响了植株高度、生殖枝数/m2、小花数/小穗和种子数/小穗,最终影响了蓝茎冰草的实际种子产量。Seed development and effect of paclobutrazol （PP333） on the seed yield and yield components of western wheatgrass（Agropyron smithii） at different date and rates were studied in Jiuquan city of Gansu province. The results indicated that the best yield happened on 2. 40 kg ai./hm^2 at the stages of three-leaf. Actual seed yield and seed quality decreased as spraying time got later and spraying amount decreased. There was evident effect of PP333 on plant height, fertile tillers/m^2, florets/ spikelet, seeds/spikelet and actual seed yield.

关 键 词：蓝茎冰草 种子产量 多效唑 

分 类 号：S54[农业科学—作物学]