| 1 | Nursery practice on seed germination and seedling growth of Dalbergia sissoo using beneficial microbial inoculants显示文摘Nursery practice using microbial inoculants was performed to find out the efficacy of the inoculants on seed germination and seedling growth of sissoo(Dalbergia sissoo Roxb.).Microbial inoculants or effective microorganisms(EM) are a mixture of many different beneficial microorganisms in a solution.The seedlings were grown in a mixture of sandy soil and cowdung(3:1) kept in polybags with pouring EM solution at different concentrations(0.1%,0.5%,1%,2%,5% and 10%) before and after a week of sowing the seeds.Seed germination rate and growth parameters of seedlings were measured,such as,shoot and root length,vigor index,fresh and dry weight of shoot and root and total biomass increment.The nodulation status influenced by EM was also observed along with the measurement of pigment contents in leaves.The highest germination rate(69%) was observed in 2% EM treatment,followed by 67% and 65% in 1% and 5% EM.The highest shoot length(33.2 cm) was in 2% EM,whereas highest root length(26.3 cm) was in 1% EM.Both fresh and dry weights from shoot and root,were maximum(4.16 g and 1.57 g;2.12 g and 0.83 g respectively) in 2% EM and were significantly(p ≤ 0.05) different from control.Vigor index was highest(4071) in 2% EM,which was significantly(p ≤ 0.05) different from control.Total dry weight increment was highest in 2% EM treatment,followed by 1% and 5% concentrations of EM.Nodulation number was higher at very low(0.1%) concentration of EM solution but it normally decreased with the increase of EM concentrations.The contents of chlorophyll a,chlorophyll b and carotenoid were highest(60.11,17.05 and 42.48 mg·L1respectively) in 2% EM treatment and lowest(39.35,13.55 and 27.29 mg·L-1 respectively) in control treatment.Therefore,low concentration of EM(up to 2%) can be used for getting maximum seed germination rate and seedling development of Dalbergia sissoo Roxb. | B.M.Khan M.K.Hossain M.A.U.Mridha | 2011 | Journal of Forestry Research2011，22，2： | 1 |
| 2 | 有效微生物群对雨豆树发芽率和苗木生长的影响(英文)显示文摘雨豆树的苗木种植在容器袋的沙和牛粪的混合质上(3:1)。在播种前后一周施用不同浓度(0.1%, 0.5%, 1%, 2%, 5% and 10%)的有效微生物群(Effective Microorganisms )液。测定发芽和苗木自然生长参数(包括:茎根长度,活力指数,直径,叶子数量,茎根的鲜重和干重,总的生物量增长量)。估计生化参数如叶绿素 a, 叶绿素 b,类胡罗卜素,并观测了受有效微生物群影响的生节情况。与对照相比, 经不同浓度有效微生物群液处理的雨豆树,发芽率和苗木自然生长参数都明显增加。施用 2%有效微生物群液的苗木生长率最大,其次是施用 1%有效微生物群液的苗木。1%有效微生物群液的生节率最高,并随浓度的增加而下降。尽管经有效微生物群液处理的苗木叶中色素比对照高,但叶绿素 a, 叶绿素 b,类胡罗卜素并不明显高于对照。随着有效微生物群液浓度的增加,苗木生长表现出不同的效果,大部分参数在中等浓度范围最高。研究表明,有效微生物群技术有助与提高苗圃中苗木的生长,有益微生物与容器袋土壤相结合有助于改善退化的或贫瘠的土壤,有利于初移植苗木的营养和水分吸收。表 4 参 17。 | B.M.Khan M.K.Hossain M.A.U.Mridha | 2006 | Journal of Forestry Research2006，17，2： | 1 |
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