摘要
[Objectives]This study was conducted to explore the fertilization ratio of walnut,so as to provide a basis for rational fertilization of walnut.[Methods]Under the condition of gravelly yellow soil in Chaotian District,Guangyuan City,the orthogonal design of L_(9)(3^(4))was used to test the fertilization ratio of nitrogen,phosphorus and potassium fertilizers.[Results]The effects of nitrogen,phosphorus and potassium fertilizers on walnut yield ranked as phosphate fertilizer>potassium fertilizer>nitrogen fertilizer.The different treatments had great effects on the yield of walnut,and for the land with gravelly yellow soil,the suitable annual fertilization amount of walnut was urea 1200 g/plant+calcium superphosphate 1500 g/plant+potassium sulfate 940 g/plant.[Conclusions]This study provides a theoretical basis for rational fertilization of walnut in Sichuan Province.
基金
Supported by Technological Achievements Transformation Fund for Research Institutes in Sichuan Province(14010112)
