论文部分内容阅读
处理完成的樟子松种子,由于受采种年份、具体采种时间、种树病虫害、种子处理方法、转运、储藏等多种因素的影响,种子质量会发生不同程度的变化,种子的发芽率、发芽势,随着种子的质量变化而降低。按照常规当一个种子群体的发芽率降低到50.0%以下时,说明整个种子群体生活力已显著衰退,不能再做播种育苗种子。遵循造林学中良种壮苗的原则,种子具有优良的品质是保证出苗早、全、齐、壮的重要条件,因此,测定种子的发芽率的最终目的是在播前评定种子品质,为确定播种量提供依据。
Processed Pinus sylvestris seeds, due to the year of planting, the specific seed time, seedling pests and diseases, seed treatment, transport, storage and other factors, the seed quality will change in varying degrees, the seed germination rate, germination Potential, with the quality of the seeds and reduce. As a general rule, when the germination rate of a seed population is reduced below 50.0%, the viability of the entire seed population has declined significantly, so seedling planting can no longer be done. Follow the principle of good seedling in afforestation, the seed has excellent quality is to ensure early emergence, all, Qi, Zhuang important conditions, therefore, the ultimate goal of determining the germination rate of seeds is to assess the quality of seeds before sowing, in order to determine the sowing Provide the basis.