生物制剂对樟子松幼苗生长的影响

该文以樟子松作为试验材料,以Pt(1、3)菌根剂、ABT3号生根粉、HRC吸水保水剂等生物制剂作为处理试剂,对比了不同生物制剂对樟子松幼苗生长的影响。结果表明:Pt3菌根剂效果最好,成活率、细根总长度、苗木高度、苗木地径、针叶长度及针叶面积均达到了最大值,分别为78.26%、150.23cm、15.751cm、0.518cm、6.156cm、0.623cm~2,显著高于对照。建议樟子松造林时采用Pt3菌根剂进行处理。     

ABT生根粉新剂型应用

三、造林1．杉木：用ABT7号生根粉25ppm浸根1小时,成活率968％。比对照提高3．9％,年高生长量提高23叽。2．湿地松：用ABT8号生根粉25ppm浸根1小时,成活率94％。3杜仲：用ABT6号生根粉50ppm浸根40分钟,成活率95．4％,比对照提高26．9％。经ABT处理的苗木造林1年后,生长量显著增加,平均高生长比对照增加4．scm。单株平均发枝数多22个枝条。4．枣树：用ABT6号生根粉50ppm浸根1／］＼时,成活率提高56％。根系平均增加19条,基径增加1．22cm,新消生长量增加匕．scm。5．侧柏：用ABTh号生根粉50ppm浸根40分钟。平均成活率达75％…     

华北落叶松造林技术

一、生根粉蘸根造林技术 华北落叶松造林应用生根粉浸根，可促进苗木根系伤口愈合和须根的生长．从而更好地提高造林成活率．增加苗木生物量生长，笔者对河北省塞罕坝机械林场千层板林场马蹄坑作业区以不同浓度的ABT生根粉3号处理2年生华北落叶松一级苗，蘸泥浆造林4年后，取得理想效果。     

ABT生根粉：青海云杉的“救星”

青海云杉是森林更新、荒山造林和庭院绿化的重要乡土树种，深受群众欢迎。青海云杉属浅根性，生长初期缓慢，常规育苗成活率只有60％．70％左右。ABT生根粉是一种广效、广谱复合型生根促进剂。用ABT生根粉处理云杉苗木，可以提高苗木叶绿素含量和光合速率，增强酸的活性与根系活力，使受伤的苗木根系迅速恢复长出新根，形成发达根系，能从土壤中吸收更多的养分和水分，增强抗逆性，生长茁壮。     

造林应用与效果

ABT生根粉系列中，3号生根粉主要用于苗木移栽时促进受伤根系的恢复，促进根系发育，提高造林成活率，增加抗逆能力。     

ABT生根粉在林木嫩枝扦插和苗木移栽应用的研究

应用1号ABT生根粉配制50PPm的浓度，对泡桐根、橡皮树穗条浸泡2个小时，生根成活率达95％；用1号ABT生根粉100ppm浸泡塔柏穗条2个小时，生根成活率达99％；用1号ABT生根粉150ppm浸泡桂花穗条2个小时，生根成活率达92％；用1号ABT生根粉300ppm浸泡绿竹枝条，成活率达78％；用1号ABT生根粉1500ppm速浸尾巨桉嫩枝，成活率达90％；用3号ABT生根粉50ppm处理香樟、天竺桂根系移栽，成活率达98％；用3号ABT生根粉100ppm处理火力楠根系移栽，成活率达90％，达到提高成活率，加速苗木生长的作用。     

不同浓度ABT生根粉对樟子松幼苗生长的影响

文章以二年生樟子松苗木为试验材料,探讨不同梯度浓度ABT生根粉浸根处理对樟子松苗木生长的影响。结果表明,当ABT生根粉为600 mg/kg时,樟子松幼苗的苗高和地径均达到最大值,分别为17.67 cm和4.93mm,比对照增加了72.2%和12.3%。地上和地下干物质量最大分别是ABT 800 mg/kg和600 mg/kg处理,分别达到3.15g和1.53g,而总干物质量在ABT浓度为600 mg/kg时达到最大,为4.65g。从变化趋势来看,ABT生根粉对樟子松苗木地下根系生长的促进作用,显著高于地上部分。     

樟子松不同类型苗木造林效果评价

通过对5a生樟子松移植桶苗、容器苗及2a生裸根苗的造林成活率、保存率、根系生长及树高生长的调查、分析得出,用移植桶苗及容器苗造林,比用裸根苗成林速度快2～4a,成活率及保存率也明显提高;经ABT生根粉、HRC保苗剂等处理过的2a生樟子松,成活率与用容器苗及移植桶苗的成活率相近,造林成本比较低。因此,提倡因地制宜,在不同的立地条件及生产条件下,选用不同的苗木造林。     

植物激素在干瘠立地侧柏造林中的应用

用α-萘乙酸、吲哚丁酸、ABT3号生根粉、2，4－D四种植物激素，每种激素3个浓度，浸泡侧柏苗木根系2h后，进行造林试验。结果表明，每种激素的适宜浓度处理对提高干瘠立地条件下侧柏造林成活率都有促进作用。以100ppm吲哚酸效果最大，造林成活率可达93％；其次为50ppmABT3号生根粉，成活率达到88％。     

Pt、ABT处理对马尖相思苗木生长的影响

通过接种Pt菌剂及施用3号ABT生根粉,进行马尖相思播种育苗试验。结果表明:Pt菌剂和3号ABT生根粉都对马尖相思苗木生长及生物量有明显的促进作用。用Pt菌剂处理后苗高、地径、侧根数、主根长、地上部分质量、地下部分质量、全质量及一级侧根长分别较对照有提高。用3号ABT生根粉处理后苗高、地径、侧根数、主根长、地上部分质量、地下部分质量、全质量及一级侧根长分别较对照有提高。     

青钱柳嫩枝扦插育苗技术研究

对青钱柳枝条采用ABT 1号生根粉和吲哚丁酸不同植物激素溶液处理。经过4年的扦插试验,枝条扦插之后,对苗木进行观察,采用不同的溶液对苗木进行浸种处理,其苗木生长状况不同。结果显示:用ABT1号生根粉处理的穗条比用植物激素吲哚丁酸处理的穗条,插穗成活率高11.2%,且根系生长伸展,侧根生长快、细根条数多、萌芽高又粗。研究表明,青钱柳嫩枝扦插,插穗宜采用ABT1号生根粉处理,效果较好。     

软枣猕猴桃扦插繁育试验

采用不同浓度的1-奈乙酸,3721生根液,258ABT生根粉处理软枣猕猴桃插穗,之后进行扦插试验。结果表明,用3721生根液200倍浸穗2h,50倍浸穗30S处理的野生软枣猕猴桃插穗发芽率、成活率及当年新条生长量、生根数量和根系生长量均优于其它处理,为软枣猕猴桃扦插繁育的优良生根剂。     

葛枣猕猴桃硬枝扦插繁殖技术的研究

对葛枣猕猴桃硬枝扦插繁殖技术研究的结果表明,采用200mg／LABT浸泡插条基部30min的生根效果最好,生根率达90％以上,且侧根数多、粗壮;扦插基质以细河沙为宜;扦插苗留床生长1年,成苗率高,第2年栽植成活率高。     

青钱柳种子不同方式浸种育苗技术试验

指出了青钱柳种子育苗采用3种不同方式浸种,其一用温水浸种处理,其二用吲哚乙酸200×10^-6溶液浸种处理,其三用ABT3号3号生根粉200×10^-6溶液浸种处理。分别用于大田育苗试验。实践证明:用ABT3号生根粉溶液浸种的种子发芽率,比用温水浸种、吲哚乙酸溶液的种子发芽率分别提高8.1%、7.8%,出土萌芽率分别提高6.7%、5.5%,苗木生长成活率分别提高8.9%、4.4%。一年生的苗木生长量,用ABT3号生根粉溶液浸种的种子培育的苗木,地径、苗高,比用温水浸种的种子和用吲哚乙酸溶液浸种的种子培育的苗木生长苗高,分别大13.0%、7.1%,地径粗26.4%、10.3%,生长率分别提高30.8%、5.6%。     

吸水剂在樟子松造林中的应用

樟子松人工植苗造林成活的关键在于苗木根系的水分保护。所以，对樟子松幼苗的根系用吸水剂进行适当的保水处理，无疑是会提高造林成活率的。     

3号ABT生根粉在板栗嫁接苗移栽上的应用研究

应用不同浓度的3号ABT生根粉对板栗嫁接苗作不同时间浸根处理后的移栽试验。试验结果表明,使用3号ABT生根粉处理板栗嫁接苗能提高其的移栽成活率,促进板栗植株的生长,并能提高其的开花结实株率。其中以用100 mg/L浓度的3号ABT生根粉溶液浸根1 h处理的效果最佳。     

坝上盐碱地枸杞造林技术研究

在河北省坝上盐碱地分别用容器苗、奈乙酸处理过的扦插苗以及分别用25、50 ug·g-1 两种浓度的3 号ABT生根粉处理过的裸根苗进行枸杞造林。结果表明:容器苗造林最好,其次用浓度为30~50 ug·g-1 的3 号ABT生根粉处理过的裸根苗,对枸杞的成活率、及生长、发育有明显效果。     

Responses of citrus fine roots to localized soil drying: a comparison of seedlings with adult fruiting trees

We studied the responses of citrus (Citrus volkameriana Tan. & Pasq.) roots to 15 weeks of soil drying. A comparison was made between the fine roots of 1-year-old seedling root systems (seedling) and the fine roots of woody laterals of 6-year-old grafted trees (adult). Each seedling and woody lateral root system was established in a pair of vertically separated and independently irrigated soil compartments located in field root chambers excavated adjacent to the trees to which the woody laterals were attached. Root + soil respiration and fine root survival of seedlings and adults were similar for the first 5 weeks. However, eight weeks after termination of irrigation to the upper soil compartments, mortality of fine roots was high in adults but not seedlings. Fine roots of adults exposed to dry soil for 5, 8 and 15 weeks exhibited 2, 26 and 33% mortality, respectively, whereas the corresponding values for fine roots of seedlings were 2, 6 and 8%. Although root + soil respiration rates of adults and seedlings were similar before the soil drying treatment, rates for adults were only 25% of those for seedlings after 15 weeks of soil drying. We conclude that, although fine roots of adults and seedlings are similar in form, they respond differently to soil drying.     

ABT生根粉在枣树根蘖苗栽植中的应用效果

为解决大枣根蘖苗造林成活率低的难题 ,应用ABT生根粉 3号对枣树根蘖苗木进行浸根处理试验 ,结果表明 :应用质量分数为 1.0× 10 -3 的ABT生根粉浸根 ,苗木生根率、成活率、生长高度均高于对照苗木。平均生根数 16条 ,平均根长 2 5 .5cm ,分别为清水对照处理的 2 .2 9倍和 3.6 4倍     

Root cold tolerance of black spruce seedlings: viability tests in relation to survival and regrowth

Root systems of 6-month-old, cold-hardened, container-grown black spruce seedlings (Picea mariana (Mill.) B.S.P.) were exposed to 0, -5, -10, -15, -20, or -22.5 degrees C. Freezing-induced damage to fine roots, coarse roots and the whole root system was assessed by various viability tests including leakage of electrolytes, leakage of phenolic compounds, water loss, root and shoot water potentials, and live root dry mass. To assess the long-term effects of freezing-induced root damage, seedling survival and regrowth were measured. Leakage of both electrolytes and phenolic compounds differed among fine roots, coarse roots, and whole root systems. In coarse roots and the whole root system, but not in fine roots, leakage of electrolytes, leakage of phenolic compounds, water loss, and root and shoot water potentials were correlated with percentage of live root dry mass which, in turn, was highly correlated with seedling survival and regrowth. Compared with live root dry mass, electrolyte and phenolic leakage, water loss, and root and shoot water potentials were less well correlated with seedling survival and regrowth. Among the viability tests, electrolyte leakage of the whole root system correlated most closely with seedling survival and regrowth. Under freezing conditions that destroyed less than 50% of each seedling's root system, about 70% of the seedlings survived and subsequent growth was little affected, whereas under freezing conditions that destroyed 70% of each seedling's root system, only about 30% of the seedlings survived and subsequent growth was reduced compared with that of undamaged plants.