水稻在拔节孕穗后期干物质生产速率最大。
In the late of jointing and booting stage rice has highest dry matter productivity.
拔节孕穗期长，幼穗分化充分，有利于壮秆大穗的形成。
The stage from jointing to booting is long and the differentiation of young ear is abundant.
试验研究了拔节孕穗期水分胁迫对水稻生长发育及产量的影响。
Effects of water stress on growth and yield of rice were studied in jointing-booting stage.
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