茶枯对香蕉生长和香蕉枯萎病的影响
- 华南农业大学天然农药与化学生物学教育部重点实验室,广州510642; 华南农业大学华南植物性农药研究中心茶皂素生物农药研究室,广州 510642; 广州甘蔗糖业研究所,广州510316 华南农业大学华南植物性农药研究中心茶皂素生物农药研究室,广州,510642 华南农业大学天然农药与化学生物学教育部重点实验室,广州510642; 华南农业大学华南植物性农药研究中心茶皂素生物农药研究室,广州 510642
关键词:
- 茶枯 /
- 香蕉 /
- 生长 /
- 香蕉枯萎病 /
- 产量
摘要: 【目的】研究茶枯对香蕉生长的影响，以及对香蕉枯萎病的防治作用，为茶枯的合理开发利用提供理论依据．【方法】将不同剂量的茶枯作为基肥根施，并在香蕉种后4个月接种尖孢镰刀菌古巴专化型4号生理小种 Fu‐sarium oxysopoyum f. sp. Cubence race 4（Foc4），调查茶枯对香蕉生长、结果速度、产量的影响，以及对香蕉枯萎病的防治作用．【结果】150 g／m2茶枯处理表现出积极的调控作用，处理后9个月香蕉平均株高198.67 cm ，茎围14.85 cm ，青叶数为10.27片，对照组分别为197.00 cm ，14.44 cm ，10.10片，二者无显著差异．在结果速度和产量方面，150 g／m2茶枯处理的结果率为87.88％，果梳个数为125.00个，对照组分别为81.67％和121.25个．接种后不追施茶枯，前期150 g／m2茶枯处理的香蕉植株死亡率比前期没有施用茶枯的死亡率低16.67％．另外，300 g／m2和450 g／m2茶枯处理对香蕉生长具有抑制作用．【结论】高剂量茶枯会明显抑制香蕉生长，影响结果率及果梳个数，推迟成熟期；适量施用茶枯可对香蕉生长产生积极作用，防治香蕉枯萎病，同时不影响香蕉的结果速度、产量和成熟期．
Effects of Camellia Cake on the Growth and Fusarium Wilt Control of Banana
- 华南农业大学天然农药与化学生物学教育部重点实验室,广州510642; 华南农业大学华南植物性农药研究中心茶皂素生物农药研究室,广州 510642; 广州甘蔗糖业研究所,广州510316 华南农业大学华南植物性农药研究中心茶皂素生物农药研究室,广州,510642 华南农业大学天然农药与化学生物学教育部重点实验室,广州510642; 华南农业大学华南植物性农药研究中心茶皂素生物农药研究室,广州 510642
Keywords:
- 茶枯 /
- 香蕉 /
- 生长 /
- 香蕉枯萎病 /
- 产量
Abstract: Objective] In order to offer theoretic basis for camellia cake utilization ,the effects of camellia cake on the growth of banana and on f usarium wilt control were investigated through a field test .[Meth‐od] Camellia cake was applied as basal fertilizer ,and banana seedlings were inoculated with Fusarium ox‐ysopoyum f. sp. Cubence race 4 (Foc4) 4 months after transplantation .The effects of camellia cake on growth ,fruiting rate and yield of banana and f usarium wilt control of the plant were studied .[Result]Camellia cake played positive roles when applied at the rate of 100kg/mu (15 mu = 1 hectare) .Nine months after the treatment ,the average plant height ,stem girth and the number of green leaves were 198.67 cm ,14.85 cm and 10.27 ,respectively ,while those of CK were 197.00 cm ,14.44 cm and 10.10 , respectively .The fruiting rate and the number of banana fruit of the treatment were 87.88% and 125.00 , respectively ,as compared to 81.67% and 121.25 for CK ,respectively .Without camellia cake top‐dressing after inoculation with banana f usarium wilt , the mortality of banana plants of the treatment with 150 g/m2 as basal fertilizer was 16.67% lower than that of the control .Furthermore ,high dose camellia cake application ,such as 300 g/m2 and 450 g/m2 ,negatively affected banana grow th .[Conclusion] High doses of camellia cake can inhibit the grow th of banana ,reduce the fruiting rate and fruit number ,and de‐lay fruit maturation .Appropriate doses of camellia cake have positive effects on the grow th of banana , help to control f usarium wilt of banana and increase banana yield .
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