以山东省德州市为试验地点 ,对用TL Fe根系输液法矫正苹果缺铁黄叶病的效果进行了研究 ,结果表明 :TL1根系输液 6d后 ,苹果叶片全铁含量比ck增加 10 4 16 % ,活性铁含量增加 30 7 6 1% ,14d后叶片全铁和活性铁达到最大值 ,分别比ck增加了 14 7 35 %和 393 0 4 % ,然后开始下降。TL2 处理 6d后 ,苹果叶片全铁和活性铁含量达到最大值 ,分别比ck增加2 73 2 2 %和 6 42 14 % ,然后开始下降。TL1处理苹果叶片花全铁、活性铁、挂果数、座果率分别比ck增加 14 0 79% ,137 2 4 % ,2 30 35 %和 6 96 5 6 % ,但花朵数比ck减少 2 5 18%。TL2 处理苹果叶片花全铁、活性铁、花朵数、挂果数、座果率分别比ck增加 15 7 90 % ,189 16 % ,38 2 1% ,2 14 82 %和 15 0 4 6 %。从试验结果来看 ,两种浓度TL(TL1,TL2 )根系输液对矫正苹果缺铁黄叶病均有较好的效果 ,均可持续一年的时间 ,但相比较而言 ,以TL1处理效果更好 ,也更经济 Taking Dezhou city of Shandong Province as test site, the effect of TL Fe root-infused method on the correction of iron-deficient apple leaf blight was studied. The results showed that the total iron content of apple leaf increased by 10 4 16% , The content of active iron increased by 30 7 6 1%. After 14 days, the total iron and active iron reached the maximum value, which increased by 14 7 35% and 39 3 0 4% respectively than ck, then decreased. After treated with TL2 for 6 days, the content of total iron and active iron in apple leaves reached the maximum, increasing by 2 73 2 2% and 6 42 14% respectively compared with ck, and then began to decrease. The total iron content, active iron content, fruiting number and fruit set rate of apple leaves treated with TL1 increased by 14 0 79%, 137 2 4%, 2 30 35% and 6 96 5 6% respectively than ck, but the number of flowers decreased by 25% 18%. TL2 treatment of apple leaves flower total iron, iron activity, the number of flowers, fruit number, fruit set rate increased by 15 790%, 189 16%, 382 1%, 2 14 82% and 15 0 46% respectively than ck. From the test results, two concentrations of TL (TL1, TL2) root transfusion on the correction of iron deficiency in apple leaf have a good effect, can last a year, but in comparison, to TL1 treatment effect Better, more economical