新疆天山中部台阶地区甜高粱种植密度与相关生育特征规律的研究

目的]研究不同种植密度对能源甜高粱品系T601生长发育、各器官干物质积累动态及生物产量的影响.方法]采用田间试验与室内分析的方法.结果]不同种植密度下株高、叶龄、茎粗、叶+鞘、茎秆及单株干物质积累均存在差异,且生物产量受种植密度影响较大,不同密度生物产量存在极显著差异.结论]综合甜高粱各性状分析,在混合肥总量为525 kg/hm2的施肥水平下,种植密度为13.9×104株/hm2时,干物质积累量较大,抗倒伏能力较强,且达到较高的生物产量.

Study on Sweet Sorghum's Planting Density in Terraced Region of the Central Tianshan Mountain with Its Growth Characteristics

【Objective】The purpose of this experiment was to study the effect of different planting densities on the growth,the dry matter accumulation of each organ and the biomass of the new strain energy sweet sorghum "T601".【Method】The field experiment was adopted in combination with in - house analysis.【Result】There are differences in plant height,leaf age,stalk thickness,leaf + leaf sheath,stem and single plant's dry matter accumulation,and its biomass is greatly influenced by the planting density.Ultrasignificant difference is found in biomass of its different densities.【Conclusion】Comprehensive analysis of sorghum's various characteristics shows that when the total amount of blended fertilizer is 525 kg/hm and the planting density is 139,000 /hm~2,dry matter accumulation reaches the maximum level,lodging resistance is the strongest,thus its biomass arriving at a high level.