有机水溶肥对甘蔗叶片及土壤养分的影响

Effects of Organic Water-soluble Fertilizer on Sugarcane Leaves and Soil Nutrients

为改善蔗区土壤贫瘠酸化状况,以甘蔗品种‘中蔗9号’为试材,研究有机水溶肥用量(A处理40 kg/667 m^(2),B处理50 kg/667 m^(2),C处理60 kg/667 m^(2))对甘蔗叶片SPAD值、养分含量及土壤养分的影响。结果表明,不同用量有机水溶肥能够提高叶片叶绿素含量、土壤pH、有机质、有效磷含量,改善土壤结构,培肥地力,促进甘蔗植株生长。其中,B处理叶绿素含量最高,差异显著;A处理土壤有机质、有效磷含量最高,差异显著;C处理土壤pH值最高,差异显著。施用有机水溶肥能够缓解土壤酸化,增加土壤肥力,促进甘蔗生长发育,以A处理效果最好。

In order to improve the poor and acidifying soil conditions in sugarcane area,the sugarcane variety'Zhongsugarcane 9'was used as the test material to study the effect of organic water-soluble fertilizer application(A treatment:40 kg/667 m^(2),B treatment:50 kg/667 m^(2),C treatment:60 kg/667 m^(2))on the SPAD value,nutrient content of sugarcane leaves and soil nutrients.The results show that different amounts of organic water-soluble fertilizers can increase leaf chlorophyll content,soil pH,organic matter,and available phosphorus content,improve soil structure,fertilize soil,and promote the growth of sugarcane plants.Among them,treatment B had the highest chlorophyll content,with a significant difference;treatment A had the highest soil organic matter and available phosphorus content,with a significant difference;treatment C had the highest soil pH,with a significant difference.The application of organic water-soluble fertilizers can alleviate soil acidification,increase soil fertility,and promote the growth and development of sugarcane.Treatment A has the best effect.