控释复肥对盆栽月季土壤养分和生长发育的影响研究

Effects of Controlled Release Compound Fertilizers on Soil Nutrient and Growth of Potted Rosa Chinensis

采用包膜控释复肥对月季进行盆栽试验,并与普通复肥进行了肥效对比。试验结果表明:控释复肥具有养分缓慢释放的特点,比普通复肥能更有效地提高土壤中有效养分的含量,有利于月季生长发育。经控释复肥处理的月季叶绿素相对含量、株高、茎粗、冠径和生长势均比普通复肥和空白有明显优势。从观赏价值来看,与普通复肥相比,控释复肥处理的月季开花早、花量多、花期长、颜色鲜艳、观赏期长。在本试验条件下,月季的控释肥最佳施肥量是纯N1.6g/盆。

The experiment of controlled-release fertilizers （CRFs） on growth of Rosa chinensis plant in pot was conducted in comparison with common compound fertilizers （CCFs）. The research results were.. The nutrient release of CRFs could be characterized by changes of available N, P and K. Compared with the CCF, the CRF significantly increased the contents of NO3ˉ-N, NH4^＋ -N, available P and available K in the soil and promoted the conditions of Rosa chinensis. The contents of chlorophyll, plant height, stem diameter, plant width and growth potential of the Rosa chinensis treated by CRFs were significantly greater than those by CCFs and CK. Furthermore, the treatment with CRFs distinctly advanced efflorescence, boosted florescence flourish and extended view period, which promoted Rosa chinensis growth. Under the experiment condition, the optimum amount for fertilizer application on Rosa chinensis was N 1.6g g/pot soil.