要想把纤弱的月季培养得枝壮、花大,关键应掌握好增施氮、磷、钾肥料的最佳时机。氮素是叶绿素的组织部分,在月季植株体内占干物质的1～3％。在生长期注意增施氮肥,会使分枝增多,茎叶呈鲜绿色且肥大。但若增施过量或时机掌握不当,又极易 If you want to cultivate the weak rose to grow strong, spend big, the key should master the nitrogen, phosphorus and potassium fertilizer the best time. Nitrogen is a part of the chlorophyll tissue that accounts for 1 to 3% of the dry matter in the rose plant. Pay attention to the growth of nitrogen fertilizer, will increase the branches, stems and leaves were bright green and hypertrophy. However, if the excessive application of excessive time or improper grasp, but also extremely easy