苹果叶营养元素含量的影响因素分析

 通过采样分析及肥料定位试验, 研究了采样时期、品种、砧木、产量、施肥等因素对苹果叶营养元素含量的影响。结果表明: 苹果叶营养元素含量的季节性变化明显; 富士、秦冠、红星、金冠、嘎拉等5个苹果品种间的叶N、P、Ca、B、Mn、Zn含量存在显著差异; M9、M26、M7、MM106矮化中间砧(新疆野苹果基砧) 和新疆野苹果乔化砧上, 苹果品种间叶营养元素含量存在差异, M9的K、Fe高而其余元素含量偏低, M26的Mg、Mn、Zn高而K、Fe低, M7的N、P、Cu、Fe、Zn较高, MM106的N、Mn高而K低, 乔化砧的Fe高而Cu、Zn低; 不同产量水平果园间叶营养元素含量不同, 高产果园较低产园N、Mg、Zn元素含量高而P、K含量低; 施肥提高叶K含量效果明显, N次之, P效果缓慢。

Analysis of Effective Factors of Nutrient Content in Apple Leaves

Through sampling and analyzing the apple leaves and conducting fertilization test in Shaanxi province,the effect of sampling time,cultivars,inter/rootstock,crop level and fertilization on nutrient content in apple leaves was discussed.The results showed that the nutrient content in apple leaves changes with seasonal grow stage of apple tree significantly.The contents of N,P,Ca,B,Mn,Zn in apple leaves are significantly different in 5 apple cultivars such as Fuji,Qinguan,Starking Delicious,Gold Delicious and Gala.The nutrient contents in apple leaves are different among M9,M26,M7,MM106 interstock and M.sieversii Rome rootstock,K,Fe contents of M9 are higher but the others are lower,Mg,Mn,Zn contents of M26 are higher but K,Fe are lower,N,P,Cu,Fe,Zn contents of M7 are higher,N,Mn contents of MM106 are higher but K is lower,Fe content of M.sieversii Rome rootstock is higher but Cu,Zn are lower.The nutrient contents of different crop level orchards are different,the N,Mg,Zn contents of high-crop level orchards are higher but P,K are lower than those of low-crop level orchards.The K content in the apple leaves can be increased significantly by fertilization than N and P.