重度修剪对杜果畸形病的防控研究

杧果畸形病是国际上为害卡亡果生产的一种严重病害．无有效化学药剂可以控制，也未发现抗病品种。目前．此病在攀枝花市零星种植或失管的卡亡果园发病较为严重．成片的柁果基地也有零星发生．且呈蔓延扩展趋势。国内有关卡亡果畸形病病原鉴定方面的报道较多．但无田间防治研究的报道。本文采取重度回缩修剪、结合其他措施对卡亡果畸形病进行防控研究。结果表明，与修剪处理前相比。处理1第1年发病率降低64．4％．单株产量增加10．28kg：第2年发病率降低60．1％，单株产量增加36．31kg：第3年发病率降低79．2％，单株产量增加28．79kg。处理2第1年发病率降低71．6％．单株产量增加6．89kg：第2年发病率降低62．8％，单株产量增加29．94kg：第3年发病率降低84．5％．单株产量增加25．17kg。

Severe Pruning for the Prevention and Control of Mango Malformation Disease

Mango malformation disease is a serious disease in mango production on international, no effective chemicals can control, also the disease resistant varieties didn＇t discover. At present, the disease in Panzhihua City is more serious in scattered planting areas or loss of control of mango orchards, even sliced mango base is sporadic and wide spread. The reports on mango malformation disease pathogen identification are plentiful; however, prevention research report is none. Therefore, the author takes heavy retractive pruning, combined with other measures to the prevention and control of mango malformation disease. The results show that, compared with the pruning ago, for treatment 1, in the first year after treatment, the incidence rate decreased by 64.4%, the yield increased 10.28 kg; in the second year, the incidence rate decreased by 60.1%, the yield increased 36.31 kg; in the third year, the incidence rate decreased by 79.2%, the yield increased by 28.79 kg. For treatment 2, in the first year after treatment, the incidence rate decreased by 71.6%, the yield increased 6.89 kg; in the second year, the incidence rate decreased by 62.8%, the yield increased 29.94 kg; in the third year, the incidence rate decreased by 84.5%, the yield increased by 25.17 kg.