1材料与方法1.1试验设计试验试材为铁杂17号和辽杂11号。试验田土壤质地为中壤,肥力中等。土壤状况为,有机质含量1.38%,全氮0.079%,碱解氮45.38μg/g,速效磷18.50μg/g,速效钾75.47μg/g。试验小区行长5m,每小区7行,行距60cm,株距18.5cm,每小区面积21m2,试验采用随机区 1 Materials and Methods 1.1 Experimental Design The test materials for the iron hybrid No. 17 and Liao hybrid No. 11. The soil texture of the experimental field is medium-sized with moderate fertility. Soil conditions were as follows: 1.38% organic matter, 0.079% total nitrogen, 45.38 μg / g nitrogen, 18.50 μg / g and 75.47 μg / g available potassium. The experimental district governor 5m, 7 rows per plot, row spacing 60cm, spacing 18.5cm, each plot area 21m2, the experiment randomized zone