摘要
采用土样中5×102(T1)、5×103(T2)、5×104菌落/cm3(T3)的棘孢木霉分生孢子悬浮液,诱导青蒿60d,分析诱导后青蒿的生长量以及土壤水解氮的变化规律。结果表明:T2诱导效果最佳。T2的诱导,青蒿的主茎高生长量在8月10—20日达到最大、茎基粗在诱导后20 d内达到最大值,两者分别为21.41、0.84 cm,是对照组的1.38、1.47倍;T2的诱导,单株青蒿根的鲜质量平均值130.776 g,比T1、T3的诱导,分别增加了88.74%和58.45%,而且生长的时间长、提升的幅度大。用T2诱导,青蒿30d的土壤中水解氮质量分数,与不施用木霉且不栽培青蒿的土壤、施用T1的木霉但不栽培青蒿的土壤、施用T2的木霉但不栽培青蒿的土壤相比,分别减少19.62%、10.4%、21.03%。棘孢木霉,不仅可以促进青蒿的生长,还可以改善土壤中的水解氮质量分数,最适棘孢木霉的量浓度为5×103菌落/cm3。
With three experimental groups of Tl （5 x 10^2 cfu/cm^3 soil ） , T2 （ 5 x 10^3 cfu/cm^3 soil ） and T3 （ 5 x 10^4 cfu/cm^3 soil ） underwent 60 days of inducing Artemisia annua by three different contents of Trichoderma asperellum conidial suspension. An experiment was conducted to study the Artemisinin growth and the available nitrogen content in the soil. Group T2 is the most suitable content and the effect of inducing on Group T2 is significant. The plant height of Ao annua reached the maxi- mum from August 10 to August 20 and the stem base perimeter reaches the maximum. When the plant height increased, the stem perimeter increased actually 1.38 and 1.47 times than that of control. The average fresh weight of root per A. annua plant of Group T2 was 130. 776 g, increasing by 18.87% and 15.84% compared to Group T1 and Group T3. The more time it grows, the more range will improve. After 30 days of inducing, in terms of soil nitrogen hydrolysate, the available nitrogen content of the pot soil of Group T2 reduced by 19.62% compared to Group A （ bare soil with neither Artemisiaannua nor inducing）, reduced by 10.4% compared to Group A1 （pot soil with T1 inducing but without Artemisia annua） and reduced by 21.03% compared to Group A2（ pot soil with T2 inducing but without Artemisia annua）. Therefore, T. asperel- lure improves not only Artemisia annua growth, but also plays a positive role in promoting the available nitrogen content in the soil, and the best inducing content is 5x10^3 cfu/cm^3 soil.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2014年第4期70-72,92,共4页
Journal of Northeast Forestry University
关键词
棘孢木霉
分生孢子
青蒿生长
土壤水解氮
Trichoderma asperellum
Conidial suspension
Growth quantity of Artemisia annua
Soil hydrolysab/e nitrogen
