摘要
运用诊断施肥综合法(DRIS)研究了四川简阳县成年温州蜜柑3要素的营养状况。结果表明:DRIS法与传统的适宜诊断法相比,不仅可诊断营养元素的高低水平。还具有衡量养分平衡的能力。试验发现,尽管两低产果园的氮、磷、钾含量都在适宜范围之下,但其限制产量的养分顺序分别是P、K、N和K、P、N。这为配方施肥、平衡施肥提供了理论依据。
DRIS (Diagnosis and Recommendation Integeted System) was employed to investigate the N. P. K. nutrient status of Satsurn Mandarin (Citrus reticulata Blanco) in Jian Yang County, Sichuan Province. A fertilization experiment was made to verify the reliablity of the results of DRIS. DRIS was prove to agree with the diagnosis made with sufficiency range method, with the advantage that DRIS reflects nutrient balance and identifies the order in which nutrients are likely to become limiting. This test showed that order of limitation in two lowyielding plots wrer P>K>N or k>P>N, although N. P. K nutrients of both low—yielding plotos were balow the critical level.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
1993年第1期91-94,共4页
Journal of Southwest University(Natural Science Edition)
基金
简阳县水果经济技术综合开发项目
关键词
氮
磷
钾
温州蜜柑/RDIS法
nitrogen nutrition
phosphorus
potassium
Citrus reticulata Blanco
/DRIS
