中文摘要：

为了探索化学调控剂在大豆生产中最佳的使用方式及对大豆的增产潜力，实验设立D1、D2、D3、D4（对照）4种化控模式，不同生育期分析不同模式对春大豆单株叶面积、株高、茎粗及产量性状的影响。D1、D2、D3三种模式与对照D4处理间大豆单株叶面积、株高、茎粗和产量构成因素相比差异达显著水平，其中D3处理达到极显著水平，2010年在大豆始荚期和始粒期大豆叶面积分别提高36．3％和54．2％，鼓粒期株高分别降低7．4cm，茎粗增加0．19cm，产量高于对照15．2％。

英文摘要：

Experiment was conducted in Heilongjiang province to valuate the effects of micronutrient fertilizer and chemical regulators on agronomic traits and yield components in spring soybean. The experiment included four treat- ments（ D1, D2, D3, and D4）. Leaf area per plant, plant height, stem diameter, and yield components of four treat- ments were determined in different development stage. The difference of leaf area per plant, plant height, stem diam- eter and yield component on D1, D2, D3, and D4 treatment was significant. Among three modes, D3 reached the highest significant. At the beginning of fruiting period and grain-filling period leaf area was increased by 36.3% and 54.2% in soybean in 2010, respectively. Plant height was decreased by 7.4cm, stem diameter was increased by O. 19cm,yield was increased by 15.2% in grain-filling period,respectively