控释尿素对寒地水稻农艺性状、产量及氮肥利用率的影响

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Effects of Different Controlled-Release Urea on Agronomic Traits, Yield and Nitrogen Use Efficiency of Cold Region Rice

Ji Jinghong, Liu Shuangquan, Ma Xingzhu, Hao Xiaoyu, Zheng Yu, Zhao Yue, Wang Xiaojun, Kuang Enjun

表1 耕层土壤基本化学性质

Table 1 Basic chemical property in the topsoil

地点 Site pH 有机质 Organic matter (g/kg) 全氮 Total N (g/kg) 速效氮 Available N (mg/kg) 速效磷 Available P (mg/kg) 速效钾 Available K (mg/kg) 方正县Fangzheng 5.57 34.6 1.7 161.2 43.5 173.2 阿城区Acheng 5.82 29.3 1.5 115.6 19.6 145.8