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以小麦冬性品种京411和春性品种扬麦158为材料,于9月30日(早播)、10月30日(适期播种)和3月2日(晚播)分期播种。研究得出,叶龄与穗分化时期的对应关系因品种、播期而异;叶龄余数与主要穗分化时期的关系在适播条件下品种间十分接近;叶龄指数与穗分化的关系因品种而异,但不同播期间差异较小。结果初步揭示了小麦叶龄、叶龄余数、叶龄指数与穗分化进程的相互关系,为作物栽培调控和生长模拟提供了依据。
The winter wheat variety Jing 411 and spring wheat variety Yangmai 158 were sown on September 30 (early sowing), October 30 (suitable for sowing) and March 2 (late sowing). The results showed that the relationship between leaf age and spike differentiation was different due to the variety and sowing date. The relationship between leaf age and major spike differentiation was very close among the varieties under suitable sowing conditions. The relationship between leaf age index and spike differentiation Variety varies, but different sowing differences. The results revealed the relationship between wheat leaf age, leaf age residue, leaf age index and spike differentiation, and provided the basis for crop cultivation regulation and growth simulation.