德宏遮放农场橡胶树重要病虫害的发生及防治

简述云南德宏遮放农场橡胶树重要病虫害发生及防治情况,对橡胶树白粉病、炭疽病、介壳虫、叶螨等病虫害的发生特点及监测和防治工作进行了总结.     

红河垦区应用“橡胶树白粉病综合管理技术”指导防治见成效

红河垦区应用“橡胶树白粉病综合管理技术”指导防治见成效红河垦区橡胶树白粉病的防治仍是生产中的一个重要问题，引起省农垦总局科技处和生产处的关注，于１９９４年组织省热作所、红河分局及所属农场推广应用省热作所完成的“橡胶树白粉病综合管理技术”研究成果，指导...     

2008年滇东南植胶区橡胶树棒孢霉落叶病调查报告

2008年通过对云南河口及滇东南植胶区橡胶树棒孢霉落叶病的定点观察和分期调查,结果表明:病害在以较快的速度蔓延、发展;同时对病害与橡胶树物候、气候条件、品种、树龄和立地环境的关系进行初步分析,提出了防治意见。     

云南省热带作物科学研究所科技人员下基层开展技术培训

<正>为落实云南省农垦局关于开展2017年科技对口服务的通知精神,着眼提高基层管理人员及承包户橡胶树病虫害防治技术,并结合农场产业结构调整要求,开展好热带水果种植技术服务,2017年3月17-21日,受勐养农场、大渡岗农场两个管委会邀请,云南省热带作物科学研究所植保中心、资源中心及种苗公司相关科技人员,分别到勐养农场、大渡岗农场举办了橡胶树病虫害防治、柚子、芒果及澳洲坚果栽培技术培训。     

2008年河口地区橡胶树寒害后小蠹虫严重危害及防治

2008年,云南河口植胶区继严重寒害后首次发生橡胶树小蠹虫严重为害,经调查证实橡胶树遭严重寒害是诱发小蠹虫大发生的直接原因;通过生产性防治试验,提出新的、有效实用的防治措施。     

云南德宏、临沧2013-2015年橡胶树病虫害监测及防治情况

本文为2013-2015年国家农业推广项目"云南省橡胶树主要病虫害监测预警体系建设"德宏中心监测站对德宏、临沧地区橡胶树病虫害发生和防治情况的简报。     

橡胶树白粉病综合管理技术取得较好的经济效益和社会效益

橡胶树白粉病综合管理技术取得较好的经济效益和社会效益１９９５年孟定农场三分场采用综合管理技术防治橡胶树白粉病４６３．４９公顷，比常规防治节省成本２．５５万元人民币，同时该技术省工、省时、省物，减少环境污染。取得了较好的经济效益和社会效益。孟定农场三分...     

河口地区橡胶树六点始叶螨发生规律初步观察

报道了河口地区2005年对橡胶树六点始叶螨消长规律的观察结果:橡胶树六点始叶螨在5月份前后开始发生,6月份虫口迅速增加,7月份达全年虫口高峰期,8月份后虫口锐减,至10月份又上升形成一个高峰。同时提出防治指标为叶平均螨口1头或虫卵比≥1时进行防治,每年6月初是防治的关键时期。     

云南植胶区危害橡胶树的长小蠹种类调查

橡胶树长小蠹是云南橡胶树主要虫害之一,为明确云南橡胶树长小蠹的种类,通过对云南植胶区进行系统调查,共发现5属8种长小蠹,新增4种.文中给出了所有种类的成虫高清图片和危害情况,为云南橡胶树长小蠹防治提供参考.     

飞机喷洒硫磺新剂型防治橡胶树白粉病考察报告

<正> 西双版纳垦区橡胶树白粉病流行有越来越严重的趋势。 从1985—1991年的七年间共发生了四次白粉病特重流行危害,给橡胶生产造成很大影响。如1985年春首次大面积特重流行,造成落叶停割损失干胶2000吨,折合人民币1216万元。由此,引起了各级领导对防治橡胶树白粉病工作的重视,加强了植保队伍和防治设施的建设,取得了一定的防治成效。但目前应用3MF—4型喷粉机喷粉和3YD—8型烟雾机喷烟防治白     

森林土壤硝化、反硝化作用研究进展

在全球气候变化的背景下,对于森林土壤中氮素循环的研究更加迫切和重要。总结比较了土壤硝化、反硝化和呼吸作用的研究方法及各种方法的优缺点,同时综述了国内外关于其时空变异和影响因素的相关研究,最后提出四点建议。     

红松人工林主要病虫害种类及营林治理技术

文章调查记录了红松人工林中发生危害的5种病原菌和44种昆虫。在辽宁东部红松栽培区,为害红松的叶部害虫以松阿扁叶蜂为优势种;枝干害虫以松梢象甲、红松切梢小蠹为优势种;果实害虫以红松球果螟为主。同时,提出了防治红松人工林主要病虫害的营林技术措施。     

四川螺髻山风景区旅游资源开发

通过对螺髻山风景区旅游资源、区位、社会环境等方面的调查，系统分析了开发螺髻山旅游资源的优势条件和制约因素，评价了旅游资源的特点，提出了开发对策。     

改善植物蛋白乳化特性的方法研究

综述了三种提高植物蛋白乳化特性的方法：化学改性法,物理改性法和酶改性法。并展望了提高植物蛋白乳化性的未来发展趋势。     

河北省野生花卉种质资源调查初报

为发掘、利用和保存野生花卉种质资源,丰富园林花卉的种类,提高质量,近年来,作者对河北省境内野生花卉种质资源进行了调查。共收载了野生花卉40科140种,其中草本花卉23科64种;木本花卉14科44种;观果树种13科38种。采集木本花卉标本74号,拍摄彩色照片107幅。本文对这项调查工作做了初步总结;同时也对今后的调查及引种利用工作提出了建议。     

油茶树体氮磷钾养分的年动态变化

为给油茶生产中采取合理的生产栽培措施提供指导,提高油茶产量,改善果实品质,以普通油茶为材料,测定油茶植株生长过程中N、P、K元素在各部位的含量,研究其在油茶树体中的时空变化规律。结果表明:在油茶树体中,各营养元素总含量最大为K元素,N元素次之,P元素最少。从油茶叶片营养含量变化情况来看,3—5月,叶片吸收的N、P、K元素不断增多;6月,叶片N、P、K元素积累达到最大。从树体部位来看,果实需要养分最多。在生长发育过程中,果实对矿质营养的需求不同,K、N、P的需求量依次为31.60、17.11、7.90 g/kg。     

Mycorrhizal synthesis between Pisolithus arhizus and adult clones of Arbutus unedo in vitro and in nursery

Arbutoid mycorrhizae were synthesized between adult se-lected clones of Arbutus unedo L. and Pisolithus arhizus. Two micro-propagated clones were tested:AL1, in vitro and C1 (acclimatized plants) in nu...     

1年生银杏苗嫁接育苗对比试验初报

培育银杏嫁接苗，通常都采用2—3年生实生苗作砧木。我们通过秋、春两季试验，采用1年生实生苗作砧木，同时进行4种嫁接方法比较，其中顶芽劈接嫁接成活率达100%，平均高可达60．70cm，枝径1．04cm，而且苗木质量好。     

A comparison of six parallel levers and two joysticks for the maneuverability of forwarders

In order to clarify the operational features of two types of controllers, which were six parallel levers and two joysticks, a comparative investigation was conducted for three different forwarders. From the results of a detailed time and operational analysis, operations of a grapple crane which were related to slewing, boom and arm functions were proved to be the main functions in loading and unloading. In regard to the six parallel levers, the following four defects were pointed out. The positions assigned for the functions, slewing, arm and rotator were not in natural relations to those movements. A lever for extension is difficult to operate. Very difficult operations occurred simultaneously controlling more than three functions. Movements of hands and fingers were very complex. In regard to the two joysticks, there was no serious problem in operations, then again, movements of the joysticks were simple. Operating with the two joysticks seemed not to be difficult even if a few extra functions were added. Thus it was advisable to equip a forwarder with the two joysticks as a controller.     

Irrigation regime affects water and aeration conditions in peat growth medium and the growth of containerized Scots pine seedings

Containerized Scots pine seedlings growing in light Sphagnum peat growth medium in a greenhouse were subjected to three irrigation treatments. The seedlings were irrigated by saturating the growth medium with a nutrient solution (i) daily or when (ii) –5 or (iii) –10 kPa medium matric potential was achieved. In general, the nutrient concentrations in the foliage of the seedlings were rather similar for all irrigation treatments. In the wet (daily) irrigation treatment, however, the foliar concentration of N was lower and the foliar concentrations of P, Ca, S, Mn and Na were higher than in the other two treatments. In the wet irrigation treatment, height growth was lower than that in the other treatments. In this treatment the shoot to root ratio and several other morphological characteristics were also reduced, while the number of root lenticels and seedling mortality were increased compared to the other treatments. Rapid growth was obtained by irrigating at –5 to –10 kPa matric potential. In the wet irrigation treatment, the median matric potential and air-filled porosity of the peat medium were –0.4 kPa and 11%, respectively, which indicated waterlogging and very suboptimal aeration to the seedlings. The respective values for the irrigations at –5 and –10 kPa were –2.7 to –3.3 kPa and 39 to 43%, which were considered to cover the range from optimum to slightly suboptimum for average water availability and aeration.