摘要
研究了不同时期套种草木樨对免耕小麦开花后干物质的积累动态、分配特性和产量的影响。结果表明:小麦从花后到成熟总干物质变化趋势呈"S"型,均在花后第30天达到峰值后下降,且达峰值时拔节期、孕穗期、开花期和灌浆中期套草木樨处理的总干物质比CK分别高2 013.48,2 832.28,2 116.85,1 469.56 kg/hm2;4个不同时期处理在整个灌浆期间干物质总的积累量分别比对照提高41%,58%,54%和46%,可见,免耕小麦不同时期套种草木樨提高了花后小麦总干物质积累水平。在干物质分配方面,免耕小麦不同时期套种草木樨对干物质在不同器官中的分配比例影响甚小。免耕小麦不同时期套种草木樨能够较大幅度地提高产量,与对照相比,拔节期、孕穗期、开花期、灌浆中期套草木樨处理分别增产24%,45%,22%,28%,这主要是因为免耕不同时期套种草木樨能够提高小麦的光合能力,促进光合产物的积累。
The dynamic change of dry matter accumulation,partition and yield of interplanting sweet clo- ver with spring wheat under no-tillage and different stages after anthesis were studied in this paper. The results showed that the amount of dry matter accumulation was consistent with the typical “S” curve from anthesis to mature, the five different treatments all reached a maximum after anthesis for 30 days, then they all fell down. In comparison with CK,the maximum for its dry matter accumulation with jointing, booting,anthesis and middle filling treatment was increased by 2 013.48,2 832.28,2 116.85 kg/hm^2 and 1 469.56 kg/hm^2 respectively; compared with CK, the dry matter accumulation amount during grain filling of the four treatments of different sow date was higher by 41%, 58%, 54% and 46% respectively, obvi-ously interplanting sweet clover with spring wheat under no-tillage and different stages enhanced the amount of dry matter accumulation of wheat. The effect of interplanting sweet clover with spring wheat under no-tillage and different stages on the portion rate in each organ was smaller in the process of translation and partition. Interplanting sweet clover with spring wheat under no-tillage and different stages was able to greatly enhance grain yield, the yield of jointing, booting, anthesis and middle filling treatment was 24%, 45%,22% and 28% higher than CK respectively, because interplanting sweet clover under no-tillage and different stages was able to enthance the photosynthesis capacity of wheat, promote the accumulation of photosynthesis production.
出处
《新疆农业大学学报》
CAS
2008年第1期30-35,共6页
Journal of Xinjiang Agricultural University
基金
农业部项目(2003070405)
关键词
免耕
套种草木樨
干物质积累与分配
产量
no-tillage
interplanting with sweet clover
the accumulation and partition of dry matter
grain yield
