保氮素在黑土上的肥效试验  

Experiment with Fertilizer Efficiency of Bao-dan-su in Blackland

作　　者：王玉峰 

机构地区：[1]黑龙江省农科院土肥所,哈尔滨150086

出　　处：《黑龙江农业科学》2002年第4期23-24,共2页Heilongjiang Agricultural Sciences

摘　　要：保氮素是一种新型尿素缓释剂 ,其主要作用是减少尿素中氮素在作物生长前期的损失 ,在玉米上应用比等量施肥的处理增产 38.5kg/ 6 6 7m2 ,比同等化肥用量后期部分追施处理增产 8.7kg/6 6 7m2 。Bao dan su is a new kind of inhibitor to slow down Urea decomposition. It's main role is reducing the loss of N urea during corn growth in earlg period. It can increase yield 38.6kg/mu compared with treatment of equal fertilizer, and 8.7kg/mu compared with treatment of topdressing respectively.

关 键 词：保氮素 黑土 肥效试验 玉米 缓释剂 增产作用 

分 类 号：S143.1[农业科学—肥料学]