核桃低产园改造试验

Test on Improvement Low Yield Orchard of Juglans regia

采用间伐降密、品种优化、整形修剪、水肥管理、花果管理、病虫害防治等措施,对7~9 a 生核桃低产园进行改造试验,研究不同措施对核桃园的影响。结果表明：不同措施对促进核桃园丰产的影响和作用不同,但联系紧密、相互促进,形成完善的改造系统。改造试验后,效果达到最优,产量由改造前的150 kg？hm－2上升到1500 kg？hm－2,增产1350 kg？hm－2,增产率达900％。

Taking the measures of thinning and decreasing density,optimizing variety,training and pruning,fertilizer and water management,flower and fruit management,disease and pest control and so on to test how to improve 7 ~ 9 years-old Juglans regia of low-yield orchard,we studied the effects of different measures on the orchard.The results showed that different measures had different effect on improving the yield of Juglans regia ,but they were closely linked, mutual promotion and forming a perfect transformation management system.After improvemental test,the effect ar-chived the best,and the output was increased from 1 50 kg-hm-2 to 1 500 kg-hm-2 ,1 350 kg-hm-2 was increased and the increasing rate of the yield was 900%.