论文部分内容阅读
本文采用正交设计对红松播种苗进行了施肥效应研究,测定了不同施肥组合条件下苗木的形态指标。结果表明:影响苗木生长的各肥料因子的顺序依次为C(追施尿素)、A(施基肥)、B(追施二铵),促进苗木生长的较佳施肥组合为A3(4)B1C3,即基肥用量为有机肥7 500 g/m2+二铵7g/m2或有机肥7 500 g/m2+二铵7 g/m2+硫酸钾12 g/m2;追肥二铵用量为0;追肥尿素的用量为30 g/m2。
In this paper, orthogonal design was used to study the effect of fertilizer on the seedlings of Pinus koraiensis. The morphological indexes of seedlings under different fertilization conditions were measured. The results showed that the order of fertilizer factors affecting seedling growth was C (topdressing urea), A (basal fertilizer), B (topdressing diammonium) and A3 (4) B1C3. The amount of basal fertilizer for organic fertilizer 7 500 g / m2 + diammonium 7g / m2 or organic fertilizer 7 500 g / m2 + diammonium 7 g / m2 + potassium sulfate 12 g / m2; top dressing diammonium dosage 0; topdressing urea dosage 30 g / m2.