梨树树干注射施肥的研究

将树干注射技术作为正常果树的一种施肥方式 ,对比树干注射加土壤施肥、树干注射施肥和常规的土壤施肥加叶面喷肥 3种施肥处理的效果 ,结果表明 ,含有树干注射施肥的 2个处理单叶面积分别增加了 8.6 3和 6 .11cm2 ,比叶重增加了 2 .90和 0 .4 0 mg/ cm2 ,叶绿体色素的含量也显著增加 ,其中总叶绿素增加 4 7.76 %和4 2 .13% ;含树干注射施肥的 2个处理使叶内营养元素含量较均衡 ,叶片净光合速率分别提高了 36 .30 %和2 1.2 8% ,单果重提高了 17.8%和 6 .5 % ,单株产量增加了 31.77%和 18.2 6 % ,增加了座果率和成花率 ,并提高了花芽质量。

Studies of trunk injection fertilizing in pear trees

Trunk injection as a normal fertilizing method was studied in this paper.Three fertilizing proactices,single trunk injection fertilizing,trunk injection fertilizing and soil fertilizing,soil fertilizing and foliar spray fertilizing,were evaluated.The results showed that the two trunk injection fertilizing practices could increase individual leaf area by 8.63 cm 2 and 6.11 cm 2,dry weight per cm 2 by 2.90 mg/cm 2 and 0.40 mg/cm 2 ;the contents of leaf total chlorophyll by 47.76% and 42.13% respectively.The two practices could also balance leaf nutrient elements,raise the net photosynthetic rate by 36.30% and 21.28%,and increase setting percentage.Individual fruit weight increased by 17.8% and 6.5%.and yield per tree by 31.77% and 18.26%.