【摘要】 将 Q3,Q4 ,K2 ,S2 4种不同类型的缓释玉米专用肥进行田间缓释效果研究 ,试验结果表明 :这 4种缓释玉米专用肥均有不同的缓释效果 ,其中以 Q3和 S2 缓释效果最佳 ,在玉米生产中一次性作底肥基施 ,其养分释放动态能与作物吸收养分动态实现较好地逼近 ,比等养分量的普通配方施肥分别增产 7.1 %和1 1 .9% ,且能减少因追肥对地膜的破坏和节省劳力 ,提高肥料的利用率 ,降低生产成本 ,经济效益显著更多还原

【Abstract】 Four different kinds of slow released fertilizers special for maize (Q 3, Q 4, K 2, S 2 ) were chosen to be test at fields level for fertility efficiency. The conclusion showed that all these four fertilizers had definite slow release effect on maize. There in, Q 3 and S 2 had the best effect, when used as one off base fertilizer for maize production, the nutrients releasing dynamic curve was closely approach that of crop nutrients uptaking dynamic curve. Contrast to the general fertilization that had the equal nutrients, the yields increased by 7.1% and 11.9% individually. Meanwhile, it may reduce the damage to plastic film cover that used caused by supplementary fertilization and may save labor that used for cultivation so that it has a significant benefit.更多还原