堆捂处理提高纳罗克非洲狗尾草种子质量的试验

通过对纳罗克非洲狗尾草Setaria sphacelata cv.Narok进行0、2、4、6、8、10 d的堆捂处理，结果表明：堆捂的狗尾草种子的温度、相对湿度都有了明显的升高。温度呈先急剧上升，再逐渐上升，最后平缓下降趋势；相对湿度呈先急剧上升，再急剧下降,最后平稳的趋势。随着处理时间的增加，种子脱粒率比对照提高了14.04%～52.8%；处理6 d的发芽率最大，为64%，比对照提高了10%。将温度控制为24.77 ℃，相对湿度为93%时，堆捂可有效地提高纳罗克非洲狗尾草种子的质量，堆捂处理的最佳时间是6～8 d。

Studies on improving seed quality of Setaria sphacelata cv.Narok by sealing treatment

The experiment studied improving seed quality of Setaria sphacelata cv.Narok  with different sealing treatments (0, 2, 4, 6, 8, 10 d). The result indicated that the temperature and relative humidity of sealed seeds increased obviously. The temperature increased rapidly first, then reduced the speed, finally decreased gradually. The trend of relative humidity is similar to that of temperature, but it decreased rapidly in the middle stage. With the increase of sealing time, dehulling rate of sealed seed has increased by 14.04%-52.80% compared to the control. The germination rate of six days sealing treatment was the highest, which contributed to 64% and has increased 10% than the control. The sealing seed treatment could improve the seed quality of S.sphacelata cv.Narok effectively when the temperature was 24.77 ℃, the relative humidity was 93%, and the best time of sealing seed was six to eight days.