长春地区芝麻播种期与磷肥用量研究

Study of seeding date and phosphorus fertilizer on yielding of sesame in Changchun district

通过不同播期和磷肥施用量对芝麻生育和产量性状的影响进行了比较研究，结果表明：不同播期对芝麻生育性状元显著差异，对产量性状影响不大，说明在长春地区4月下旬—5月上旬均可播种芝麻，适播期较长；而在同一播期不同磷肥施用量对生育性状和产量性状有极显著影响，在吉林省中部草旬黑土上种植芝麻，磷肥施用量50kg／hm^2和75kg／hm^2有显著差异，50kg／hm^2和100kg／hm^2有极显著差异。因此，适宜的磷肥施用量为75～100kg／hm^2。

The experiment was carried out in agricultural science test station of Jilin agricultural university, the soil type is meadow blackland, previous crop is corn and this soil is highly fertile. The effect of different sowing date and application of different quantities of phosphorus fertilizer on growth and yield characteristics of Sesamum inicum were studied. The results indicated that the different sowing date had no significant influence on growth and yield characteristics. Therefore the sowing date was reasonably long, it could be any time between 20th of April and 10th of May. However for the same sowing date, different levels of phosphorus fertilizer （50.70.100kg/hm^2） resuited significant difference on growth and yield characteristics. The results indicated that there were significant difference between 50 kg/hm^2 and 70 kg/hm^2, and highly significant difference between 50 kg/hm^2 and 100 kg/ hm^2. Therefore, for Sesarnum inicum crop in the meadow blackland in central Jilin province, the most appropriate dose of phosphorus fertilizer was between 70～100 kg/hm^2.