Study on nutrition change rule and nutrition diagnosis of Zanthoxylum armatum var.novemfolius leaves
To master the soil nutrient status and leaf nutrient variation of Chongqing Zanthoxylun armatum var.novemfolius orchard,and provide strong support for rational fertilization and nutrient management in Chongqing Z.bungeanum orchad.Through the study of the nutritional level of Z.armatum var.novemfelius leaves in Chongqing,the DRIS diagnostic fertilization comprehensive method,DOP nutritional diagnosis and nutrient element grading method were used.The results showed that the contents of Ca,Cu,B,Zn,Fe,Mn and S in leaves decreased from March to April,and the contents of N,P,K and Mg fluctuated increased in May.There was a correlation between some elements in leaves.The correlation between N,P and K was extremely significant(P<0.01).K element was significantly negatively correlated with Ca,Cu,Zn,Fe,Mn,S and B elements(P<0.01).Mg element was significantly negatively correlated with P,Ca,Fe,S and B elements(P<0.01).Ca element was significantly positively correlated with Zn,Fe,Mn,S and B elements(P<0.01).In summary,the DRIS method and DOP method were used to diagnose the nutritional status of Z.armatum var.novemfolius leaves.There was no significant difference in the order of fertilizer requirements calculated by the two methods.The most deficient elements in the whole growth period of the middle-yield orchard,were Ca,Cu,S and B.
Zanthoxylun armatum var.novemfoliusleavesnutrient elementsstandard valuethe order of fertilizer requirement
NETL
NSTL
万方数据
