摘要
以强筋春小麦品种龙麦26为试验材料,研究了施肥和密度处理对群体质量指标、产量的影响。结果表明,产量在施肥(氮磷钾纯量)180 kg/hm2,密度600万株/hm2条件下达最大值,为5 716.5 kg/hm2,其关键群体调控指标为孕穗期叶面积指数6.0,地上部干物质积累量和花后干物质积累量分别为16 899 kg/hm2和9 211.5 kg/hm2;在此施肥和密度条件下,叶面积指数在整个生育期维持在较高水平,并且后期下降较慢。
The strong-gluten spring wheat Long Mai 26 was studied to investigate the effects of fertilization and density on the index of population quality and yield. The results showed that the treatment of 180 kg/hm^2 and 6 million individual plant/hm^2 was the best treatment, the yield of this treatment was 5 716.5 kg/hm^2. The highest LAI of this treatment at booting was 6.0, dry production accumulation of above ground and dry production accumulation after anthesis of this treatment were 16 899 kg/hm^2 and 9 211.5 kg/ hm^2; the LAI of this treatment kept upper level in the whole growth time and fell obvious slow in the later growth stage.
出处
《天津农业科学》
CAS
2008年第6期57-60,共4页
Tianjin Agricultural Sciences
关键词
施肥
密度
春小麦
群体质量
产量
fertilization
density
spring wheat
population quality
yield
