摘要
为了给枯草芽孢杆菌在苦瓜上的应用提供科学依据,研究了根施不同浓度枯草芽孢杆菌对苦瓜生长、光合特性、产量和养分吸收的影响。以‘桂农科六号’苦瓜为供试材料,采用模糊综合评判方法,综合评判根施枯草芽孢杆菌8×10~5、4×10~5、2×10~5CFU·mL~(-1)对苦瓜的株高,茎粗,叶片数,叶片SPAD值,叶片全氮、全磷、全钾含量,瓜长,瓜横茎,瓜肉厚和小区产量的影响。结果发现,根施8×105CFU·mL~(-1)枯草芽孢杆菌后,茎粗和叶片数分别比对照增加7.14%和2.54%,叶片全钾含量比对照增加了4.00%,瓜长、瓜横茎、瓜肉厚及小区产量与对照相比分别增加了0.65%、2.02%、3.67%和2.96%。根据隶属函数的计算结果,各处理的强弱顺序为8×105CFU·mL-1> 4×105CFU·mL-1>空白处理> 2×105CFU·mL~(-1)。
To study the effect of Bacillus subtilis root application on bitter gourd growth, photosynthetic characteristics,yield and nutrient absorption characteristics were measured. Bitter gourd cv.‘guinongke 6'was treated by rood application of Bacillus subtilis diluted by 8×10~5, 4×10~5and 2×10~5CFU · mL~(-1). The effect of plant height, stem diameter, blade numbe, fruit length, fruit width, flesh thickness, yield per plot, SPAD of leaf, and total N, P, K of leaf were evaluated by fuzzy comprehensive evaluation. The results showed that the T1 treatment(8 × 10~5 CFU · mL-1)was the best. Compared with the contrast, the stem diameter, leaf number were increased by 7.14 % and 2.54 %, respectively. The total K of leaf was increased by 4.00%. The fruit length, fruit diameter, flesh thickness, and yield per plot were increased by 0.65%,2.02%, 3.67% and 2.96%, respectively. According to the result of comprehensive evaluation, the significance among the treatments was as followed: 8×105CFU· mL~(-1)> 4×10~5CFU· mL~(-1)> control> 2×105CFU· mL~(-1).
引文
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