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猝倒病是松、杉苗期的主要病害之一。苗木出土两个月左右,一旦发生蔓延,将造成大量苗木倒伏死亡,严重地影响了出苗率和苗木的质量。1973年全县受猝倒病危害而死亡的苗木达40%以上。因此,开展防治松、杉苗木猝倒病的研究,是育苗技术中的一个环节。1972年,在湫山公社道林辽水库杉木苗圃进行了六六六粉防治猝倒病的试验,观察结果,效果良好。为了探讨六六六粉防治松、杉猝倒病的效果,于1973年进行了室内病菌接种和室外苗圃防治试验,证明六六六粉剂对猝倒病病菌具有毒杀作用。因而,六六六粉可以防治猝倒病的发生和蔓延。 相似文献
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《内蒙古林业调查设计》2018,(6)
为筛选出对樟子松苗木猝倒病防治效果较好的药剂,本试验选择了百菌清、甲基硫菌灵、多菌灵、代森锰锌、敌克松5种药剂进行试验,测定5种药剂不同剂量处理对樟子松苗木猝倒病的防治效果。试验结果表明,在樟子松出苗后进行药剂喷施,试验的5种药剂均对樟子松苗木猝倒病表现出一定的防治效果。其中,敌克松对樟子松苗木猝倒病的防治效果最高,使用70%敌克松可溶性粉剂稀释800倍液处理后对樟子松树苗木猝倒病的防效达84.8%,多菌灵的防治效果次之,使用80%多菌灵可湿性粉剂稀释1 200倍液处理后对樟子松苗木猝倒病的防效达81.6%。百菌清、甲基硫菌灵、代森锰锌对樟子松苗木猝倒病的防治效果较低,但对樟子松苗木猝倒病也具有一定的防效。生产中建议在樟子松出苗后,使用敌克松、多菌灵喷雾进行处理防治樟子松苗木猝倒病。 相似文献
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一、六六六粉防治松、杉苗木猝倒病浙江省仙居县农林局报导:在湫山公社道林辽水库杉木苗圃进行了六六六粉防治猝倒病的试验,观察结果,效果较好。苗圃的土壤消毒处理:1972—73年,先后在两个苗圃试验。在育苗前,每亩用6—8斤六六六粉土壤消毒。1972年6月 相似文献
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针对核桃产业开发对优质苗木的需要,通过对成县川坝、丘陵、山区不同立地类型区建立核桃苗圃、种子选择处理、嫁接砧木选用、嫁接时间方法、苗期管理技术和苗木出圃质量等指标进行了对比试验研究。结果表明:选择川坝区苗圃,选用黑核桃种子、沙藏催芽处理,高床地膜覆盖,培育优良砧木,春季单芽切接,夏季方块芽接,加强苗期管理,是培育核桃优势嫁接苗的关键技术措施。 相似文献
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苗圃苗木病虫害的防治工作 总被引:1,自引:0,他引:1
苗圃在培育苗木过程中,不可避免的会遭到病虫害的威胁,苗圃中的苗木,多半处于幼苗的生长期,抵御病虫害的能力有限,一旦受到病虫害的侵袭,会严重影响苗木的生长和成活。所以,苗圃中苗木病虫害的防治至关重要。做好病虫害防治工作,才能最大限度的保护苗圃内苗木的正常生长,保证苗圃中苗木的质量,减少经济损失。通过对苗圃苗木病虫害的特点介绍,阐述了苗圃苗木病虫害防治现状,并提出了苗圃苗木病虫害的防治措施。 相似文献
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苗木立枯病是沙冬青苗木繁育过程中最主要的病害,浸染速度快,危害极为严重。通过不同药剂对种子消毒和苗期防治的对比试验,筛选出KMnO4、多菌灵浸种最好,波尔多液、FeSO3、多菌灵对沙冬青苗木立枯病防治效果最好。 相似文献
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Liu Yongchun Chen WenbinNortheast Forestry UniversityLi JichengDailing Experimental Forestry Bureau of Hcilongjiang ProvinceLi HuachenTahe Forestry Bureau of Heilongjiang Province 《林业研究》1991,2(1):37-41
The primary purpose of fertilization in nursery soils is to assure production ofhigh—quality planting stock. Therefore,the appropriate information on fertilizers and their use aswell as their effects on seedling growth is important to nursery managers in their nursery practice.Inthis paper,larch seedling growth response to six fertilizers are discussed based on the results ofthree—year studies which were carried out at Dailing Forest Nursery in 1987. 相似文献
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The state of urban seedling nurseries in the north-eastern region of Bangladesh is examined with a focus on production and profitability of the enterprises. Twenty-eight sample nurseries out of the 97 nursery enterprises in Sylhet town were selected at random, and operators personally interviewed. It was found that the entrepreneurs are not highly educated though they believed that a basic level of education is required to understand the management of young nursery stock. Labourers of various employment categories work in the enterprises and their wage is determined by their skill, gender and efficiency. Capital and operating costs vary among the enterprises according to land value, production capacity, infrastructure type and workforce size. Production capacity ranges from 10,000 to 5 M seedlings/year with an average 836,000, though actual average production is only 341,000 seedlings/year. The production cost per seedling ranges from Tk. 4 to 50 while sale value ranges from Tk. 10 to 60. The most frequently sold species are Acacia mangium, Swietenia macrophylla, Tectona grandis, Mangifera indica, Litchi chinensis and Cocos nucifera. Nursery techniques and cultural practices adopted by nursery operators depend on the type of species and its silvicultural requirement. Despite some problems, including lack of suitable land for nursery establishment and inadequate level of technical knowledge for high quality seedling management, it seems that production of tree seedlings is a promising profitable small-scale business in the study area. 相似文献
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人工接种对桤木结瘤固氮的效应初探 总被引:1,自引:0,他引:1
通过桤木根瘤的Frankia菌的纯菌制剂和悬液接种,进行砂培、土培和田间苗圃的幼苗接种试验,均取得较好的接种效益。砂培菌剂接种者100%结瘤,对照为零,苗高生长为对照的2.6倍;5种紫色土上的悬液接种,结瘤固氮量和苗高生长均有不同程度的提高,田间接种试验亦取得一定效果。 相似文献