有髯鸢尾“常春黄”的干物质积累及养分吸收利用研究

Study on Dry Matter Accumulation and Nutrient Absorbtion and Utilization of Iris germanica cv. ‘Changchunhuang’

以有髯鸢尾"常春黄"为试材,研究其生育期内各主要器官中干物质积累及氮、磷、钾养分积累、利用与转移规律,探讨其干物质积累及氮、磷、钾养分积累的相互关系。结果表明:总干物质积累呈"S"型单峰曲线变化,最大值出现在8月30日的秋花期,干物质积累量达到39.86g/株;氮、磷、钾养分积累在各器官中差别较大,但总养分积累均呈现K>N>P的规律,且秋花期养分积累明显高于春花期;相关性分析表明,"常春黄"干物质积累与N、P、K养分积累均呈极显著性正相关,氮磷钾养分在"常春黄"生育期总积累比例为1.0∶0.29∶14.8。

Taking Iris germanica cv. ＇ Changchunhuang＇ as test materials, the dry matter accumulation, nutrient absorption and utilization and the low between the distribution between the primary organs 0f the Iris germanica cv. ＇Changchunhuang＇ were studied,the relationship of the dry matter accumulation and nutrient absorption and utilization were discussed. The results showed that dry matter accumulation appeared S-type curve,the maximum appeared in the August 30th （autumn florescence）,dry matter accumulation reached to 39. 86 g per plant. There were big differenees in the nutrient accumulation o{ primary organs, but nutrient accumulation showed as K〉N〉P,and nutrient accumulation in autumn florescence was higher than spring florescence. The correlation analysis showed that the dry matter accumulation and nutrient uptake exhibited an extremely significant positive correlation. The N ： P2O5 ： K2O ratio was 1 ： 0. 29：14. 8 in the whole growth period.