辽西北半干旱地区南果梨园锌肥施用试验

Application of Zinc Fertilizer on Nanguo Pear Orchard in Semiarid Areas of Northwestern Liaoning Province

通过对建平县南果梨园进行不同方式和不同时期的土壤锌肥施用试验,结果表明:对南果梨园施用0.2%ZnSO4,可以促进南果梨树体的生长发育和产量的提高;不同施肥方式中,发芽前喷施平均产量为38.60kg·株-1,土施平均产量为35.24kg·株-1,显著高于不施肥;不同施肥时期中,发芽前和花期喷施平均产量分别为34.56和34.17kg·株-1,显著高于不施肥。南果梨施用锌肥以发芽前喷施和花期喷施0.2%ZnSO4的效果最佳,喷施的最适宜时期为花期前1周及盛花期。

Application experiments of zinc fertilizer on Nanguo Pear orchard with different ways at different stages were conducted .Result shows that applying 0 .2% ZnSO4 can increase the growth & yield of Nanguo pear ;among different application ,the mean yield per tree is 38 .60 kg by spraying 0 .2 % ZnSO4 before germination;the mean yield per tree is 35 .24 kg by soil application with 150 g ZnSO4 ;spraying and soil application are higher than that of CK(without fertilizer);the mean yield per tree before germination and during flowering stage is 34 .56 kg and 34 .17 kg ,respectively ;both are significantly higher than that without fertilization .among different stages of fertilization . Spraying 0 .2% ZnSO4 on Nanguo Pear before germination and during flowering stage can obtain the optimal effect . The most optimal stage for spraying is flourishing flowering and one week before flowering .