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四个甘蔗栽培品种在对比的环境条件下,分蘖变化的差异是从下种到收获时得出的。从所观察到的模式可区别为三个不同的阶段。第一阶段的主要特征是分蘖的萌发而达到分蘖数的高峰期;在第二阶段中,分蘖死亡占优势,因而导致一个稳定的蔗株群体的建成(第三阶段)并且成活至收获。通过在最初阶段分蘖萌发的比率和持续期的差异可以观察出环境的效应。高峰期的分蘖数与收获时所观察到的原料蔗茎数是密切相关的。不管环境条件或者品种如何,较高的分蘖产生,即使其死亡率有差异,也导致收获时有较多的蔗茎数。讨论蔗株群体内和蔗株群体之间的变化与作物分期方案的关系,目的在于增加收获时的产量。
The differences in tillering among four sugar cane cultivars under the comparative environmental conditions were obtained from the next planting to the harvest. The patterns observed can be distinguished into three distinct phases. The main feature of the first stage is the tillering germination leading to the peak tillering stage; in the second stage tillering dominates, resulting in the establishment of a stable population of sugarcane (stage III) and survival to harvest. The effect of the environment can be observed by the difference in the ratio and duration of tiller emergence at the initial stage. The number of tillers at the peak is closely related to the number of sugarcane stems observed at harvest. Irrespective of environmental conditions or varieties, higher tillers occur, even with differences in mortality, resulting in more cane stems at harvest. Discuss the relationship between changes in sugarcane populations and populations of sugarcane and crop staging programs with the goal of increasing yields at harvest.