摘要
１９９１～１９９２年在田间栽培条件下，研究了氮、磷、钾三要素不同配比对莱阳沙参产量和参根生长的影响。结果表明，适当氮肥用量可提高鲜参产量，增施钾肥可获得更高产量，以施尿素４５０ｋｇ／ｈｍ２、过磷酸钙３００ｋｇ／ｈｍ２、硫酸钾９００ｋｇ／ｈｍ２的肥料配比产量最高；施尿素２２５～４５０ｋｇ／ｈｍ２，配合增施钾肥，可明显提高参根的整齐度和商品价值；较低的氮肥用量，配合增施磷钾肥，可提高沙参的根冠比。
Effects of compounding application of nitrogen, phosphorus and potassium on yield and root growth of Glehnia littoralis F. were investigated under field conditions from 1991 to 1992 . Results showed that yield in fresh weight of G. littorlis was increased with proper amount of nitrogen application. The increasing of potassium application resulted in higher yield. The highest yield was obtained with the application of urea 450 kg·hm -2 , calcium superphosphate 300 kg·hm -2 and potassium sulfate 900kg·hm -2 . Application of urea 225～450kg·hm -2 mixed with potassium fertilization improved significantly the uniformity and commodity value of G. littorlis. Lower amount of nitrogen applicaton with increasing phosphorus and potassium application could increase utilization percent of the fertilizers and root/crown ratio of G. littorlis.
出处
《莱阳农学院学报》
1997年第2期105-108,共4页
Journal of Laiyang Agricultural College
关键词
肥料配比
莱阳
沙参
产量
生长
compounding application of fertilizers
Glehnia littorlis
growth
yield
