本研究探討木黴菌對礦物之溶解能力及對蘿蔔生長與營養元素吸收之影響。試驗分成兩部分：一、木黴菌對不溶或微溶礦物元素的溶出與嵌合能力的測定，二、盆栽接種不同木黴菌菌株在不同土壤環境中對作物吸收氮、磷等營養元素之影響，及其對作物生長之效應。由培養液試驗中磷酸鈣、氧化銅、氧化鐵、氧化錳及鋅的溶出試驗，獲知接種木黴菌處理使培養液中磷、鐵和銅元素的濃度降低，溶液中錳及鋅濃度則呈現增加。此外，接種木黴菌可將鐵離子 (Fe3+) 還原成亞鐵離子 (Fe2+)、銅離子 (Cu2+) 還原成亞銅離子 (Cu+)，且會產生嵌合物質與銅嵌合。盆栽生長試驗方面，平鎮系酸性土壤栽植蘿蔔接種T1295-22菌株處理，植株鉀、鈣、鎂、錳之吸收量顯著高於對照處理，而接種R42處理則在氮吸收量上顯著高於對照處理。吉安系鹼性土壤接種木黴菌則無顯著效果。

This study was to investigate the mineral solubilizing ability of Trichoderma spp. and its effects on the growth and nutrient uptake of crops. There were two parts in this study. One was to determine whether Trichoderma spp. are able to solubilize various insoluble or sparingly soluble minerals in vitro. The other was to determine the effect of different Trichoderma strains on nutrient uptake of crops under different soil conditions. For sucrose-yeast extract medium tests, the results indicated that Fe2O3, MnO2, Zn, and rock phosphate (most calcium phosphate) were sparingly solubilized by cell-free cultures, but P, Fe and Cu concentrations reduced, while Mn and Zn concentrations increased with the treatment of Trichoderma spp. in the culture medium. In addition, those Trichoderma strains produced the chelating substances to chelate the Cu ions and diffusible metabolites capable of reducing Fe(III) and Cu(II) to Fe(II) and Cu(I), respectively. For plant growth tests in pot experiments, Trichoderma strain 1295-22 significantly increased K, Ca, Mg and Mn uptake of radish plants as compared with untreated plants grown in acidic soil (Pincheng series). However, strain R42 significantly increased the nitrogen uptake of radish plants. In alkaline soil (Chi-An series), there was no significant effect of Trichoderma strains on plant growth and nutrient uptake.