高产大麦的产量形成和养分积累特点研究  

Studied on Characteristics of Yield Formation and Nutrient Accumulation of High yielding Barley

作　　者：陈锦新[1] 郭恒德 蔡仁祥[3] 张国平[1] 

机构地区：[1]浙江大学农学系,杭州310029 [2]浙江省桐乡市农业局 [3]浙江省农业厅农作物管理局

出　　处：《大麦科学》2000年第4期16-19,共4页Barley Science

基　　金：浙江省科委资助项目;浙江省科技厅重点课题

摘　　要：研究了每公顷单产 52 50kg以上的大麦群体产量形成和养分积累特点。结果表明 ,在适宜的基本苗下 ,争取高成穗数和粒重或争取高成穗率和实粒数都能取得高产 ;过早播种将导致年前生长过旺 ,年后生长发育受抑制 ,群体干物质和养分积累减缓 ;高产大麦的养分积累一直持续至成熟期 ,齐穗至成熟期有持高养分积累量 ;The characteristics of yield formation and nutrient accumulation of the high yield barley was studied. The results showed that high yield could be obtained either by increasing spikes and grain weight or by increasing the ratio of spike developed tillers and grains pre spike, on the condition that the basic population was reasonable. The growth of barley plants sown too early would be luxurious growth before over wintering, but were greatly inhibited later on,leading to less and slower dry matter and nutrient accumulation. High yield barley did not stop accumulating nutrient till maturity, and it was showed that there was moderate nutrient accumulation from heading to maturity. It is very important for high yield to apply sufficient fertilizer at booting stage.

关 键 词：大麦 产量形成 养分积累 

分 类 号：S512.3[农业科学—作物学]