Another 15 percent will be for agriculture, though KCNA gave no amounts.

给与农业的占到15%，但是KCNA没有给具体数字。

After "years of research", said the state news agency KCNA, it devised a chemical agent that could lengthen the blooming period by a week in summer or by 20 days in winter.

朝中社称经过“多年的研究”，他们找到了一种化学试剂，该试剂能延长花期，使其在夏季冬季分别延长一个星期和二十余天。