不同土壤及种植密度对苏丹草农艺性状的影响

以内农一号苏丹草作为材料,采用大田小区栽培法,在内蒙古农业大学萨拉齐分校试验地和海流图重度盐碱地上种植,研究不同土壤条件、不同种植密度下苏丹草农艺性状的表现,相同种植密度不同土壤条件对苏丹革农艺性状的影响.结果表明：7月27日于萨拉齐测定不同密度下内农一号苏丹草株高、叶面积,均有显著差异.同日在海流图测定结果显示不同密度下各性状都具有显著差异（P＜0.05）.9月16日在萨拉齐测得不同密度下,株高、叶面积、茎粗、单株鲜重、糖锤度具有显著差异（P＜0.05）,同日在海流图测得不同密度下单株鲜重、糖锤度、每平米产量具有显著差异.综合分析内农一号苏丹草在两个典型地区均以8～12cm株距鲜草产量最高,相同密度下萨拉齐两个时期各项指标大多优于海流图.

Effect of Different Soil and Planting Density on Sudan Grass Agronomic Traits

Neinong No.1 as the material,planted in Salaqi and Severe saline-alkali land of Hailiutu using field cuhivation, Sudan grass agronomic characters under different soil conditions and planting density were researched.The results indicated that Neinong No.1 had significant difference in plant height,leaf area under different density on July 27 in Salaqi and the same results occurred in Hailiutu（P〈0.05） on the same day.Plant height, leaf area,stem diameter,fresh weight per plant,sugar degree of hammer all had significant difference under different density on September 16 in Salaqi and Hailiutu. Comprehensive analysis of Sudan grass farming,as the density in 8-12 cm planting distance grass yield was highest,Salaqi had superior in agronomic characters than Hailiutu under same density in same day.