球孢白僵菌不同施用方式对玉米促生作用的研究

发布时间：2018-05-18 02:01

本文选题：球孢白僵菌 + 玉米　；参考：《热带作物学报》2017年02期

【摘要】：采用土壤施用和叶面喷施2种方式将球孢白僵菌(Beauveria bassiana)菌株Bb202接种至玉米,研究不同接种方式及处理浓度对玉米生长的影响。结果表明,2种喷施方式对玉米苗均存在促生作用,且这种促生作用与孢子接种浓度密切相关。在叶面喷施处理中,白僵菌仅对玉米地上部分生长指标有促进作用,而对玉米苗的根长无显著影响;其中1.0×10~4孢子/m L处理组对玉米苗的促生效果最佳,其株高、叶长、叶宽、鲜重指标比蒸馏水对照组分别高出7.47%、15.42%、25.70%和16.85%。在土壤喷施处理中,白僵菌对玉米苗地上与地下部分均有显著促生作用;其中1.0×106孢子/m L和1.0×10~8孢子/m L处理组,玉米株高、叶长、根长、生物量指标较蒸馏水对照组分别提高了28.66%和29.59%、30.66%和37.85%、43.08%和33.60%、28.35%和32.55%。从对玉米苗的促生作用来看,用1.0×106孢子/m L的白僵菌悬浮液处理土壤,可以取得最经济、最显著的促生效果。
[Abstract]:2 methods of soil application and foliar spraying were used to inoculate Beauveria bassiana strain Bb202 to maize. The effects of different inoculation methods and treatment concentration on maize growth were studied. The results showed that the 2 spraying methods had a growth promoting effect on the maize seedlings, and the growth promoting effect was closely related to the concentration of spore inoculation. In the spraying treatment, Beauveria bassiana only promoted the growth index of the upper part of the corn, but had no significant effect on the root length of the corn seedling, and the 1 x 10~4 spores /m L treatment group had the best effect on the maize seedling. The height, the leaf length, and the fresh weight index of the plant were 7.47%, 15.42%, 25.70% and 16.85%. respectively higher than the distilled water control group. In the treatment, Beauveria bassiana had a significant growth promoting effect on the ground and underground parts of the maize seedlings, of which 1 x 106 spores /m L and 1 x 10~8 spores /m L treatment group, maize plant height, leaf length and root length, and biomass indexes increased 28.66% and 29.59%, 30.66% and 37.85%, 43.08% and 33.60%, 28.35% and 32.55%. from the maize seedlings. The effect of 1 * 106 spores /m L Beauveria bassiana suspension on soil can achieve the most economical and significant growth promoting effect.
【作者单位】：安徽农业大学微生物防治省重点实验室;
【基金】：国家自然科学基金项目(No.31471822)
【分类号】：S476.12;S513

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