钼、氮配合施用对冬小麦产量、干物质积累的影响  

EFFECT OF N,Mo COMPOUND ON YIELD AND DRY MATTER OF WINTER WHEAT

作　　者：胡承孝[1,2] 王运华[1,2] 李宗堂 何华 谭启玲[1,2] 杜昌文[1,2] 魏文学[1,2] 

机构地区：[1]华中农业大学资源环境与农业化学系 [2]湖北省枣阳市农业技术推广中心

出　　处：《华中农业大学学报》1999年第3期225-228,共4页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金;农业部"九五"重点项目

摘　　要：采用田间试验和盆栽试验研究了钼、氮配施对冬小麦产量及干物质积累的影响。结果表明，增施氮肥仍然是冬小麦高产所必需的，在高施氮量下配施钼肥，钼肥对冬小麦的增产效果更明显，并提高氮肥增产效果；高氮条件下施钼能增加冬小麦出苗数、冬至苗数和穗数以及株高、穗长，并使植株、麦穗整齐度增加；施钼处理冬小麦植株干物质积累高峰在拔节至抽穗期，而缺钼植株则在抽穗至成熟期。施钼植株拔节期、抽穗期功能叶干物重增加，说明功能叶光合能力因施钼而增强；与营养器官相比，钼肥能更显著地增加籽粒产量，对生殖生长促进作用更大。Effects of Mo,N compound on yield and dry matter of winter wheat were studied under field and pot culture experiments.The results showed as following: high rate of nitrogen fertilizer was necessary for high wheat yield, and under high nitrogen condition, the increasing rate of winter wheat yield by molybdenum was more significant. The seedlings, tillers, spikes and the plant height,spike length of the winter were all increased by molybdenum; the maximum growth period of winter wheat was delayed by molybdenum defficiency,and then the generative growth was retarded by excess vegetative growth during ear and mature period, and molybdenum is more important for generative growth.

关 键 词：钼 氮 冬小麦 产量 干物质 施肥 

分 类 号：S512.106.2[农业科学—作物学]