【摘要】 长效玉米专用肥 (免追旺 )在吉林省 7个县 (市 )进行田间试验。结果表明 ,其 1kg养分增收玉米 4 1kg,养分回报率比常规一次性施肥提高 19.8% ,比多施 2 0 %的 15 15 15复混肥提高 2 3.1% ;分别增收 4 85元 / hm2和 2 6 8元 / hm2 。更多还原

【Abstract】 A test on maize using slowrelease compound fertilizer (without top dressing) in cropland of 7 counties of Jilin province was done. The result indicates that yield of maize is increased by 41 kg with 1 kg nutrient elements. Compared with the conventional application of common fertilizer and the compound fertilizer (151515) applied more than 20% weight of slow release fertilizer with top dressing, the yields are respectively raised by 19.8% and 23.1%, the benefit by 485 RMB Yuan and by 268 RMB Yuan per hm\+2.更多还原