共查询到19条相似文献，搜索用时 109 毫秒
1.
2.
3.
4.
目前,我国茶叶市场上大宗红绿茶价格低廉,产品滞销,许多红绿茶产区已不采制夏秋茶,影响了全年收入,实是可惜。为此,本刊记者就夏秋茶的有关问题走访了中国农业科学院茶叶研究所沈培和研究员,请他提出指导意见。本刊记者问(下同):在目前市场状况下,红绿茶产区怎样采制夏秋茶才能 相似文献
5.
1 中茶所尹军峰团队"夏秋茶高值化利用关键技术创新与应用"成果获省科技进步一等奖
6月15 日,2020年度浙江省科学技术奖励大会在省人民大会堂召开.中国农业科学院茶叶研究所尹军峰首席科学家及其团队的"夏秋茶高值化利用关键技术创新与应用"成果荣获2020年度浙江省科学技术进步一等奖.该项目针对市场需求和夏秋茶资源特点,从茶叶、茶提取物、茶功能成分三个层次创新,主要取得了三项突破:创立了将夏秋茶苦涩味转化为回甘味的新方法,实现了夏秋茶叶在饮料工业上的广泛应用;发明了夏秋茶汁高质化定向提取新工艺及装备,突破了夏秋茶加工高品质速溶茶的技术瓶颈;创建了食品级儿茶素绿色提制与协同增效新技术,开拓了夏秋茶在健康食品应用的新途径.经中国农学会鉴定,该项目整体技术居国际领先水平.项目获发明专利25 件(国际专利 1 项)、实用新型专利15 件,其中转让(含许可)14件,制定国家标准1 项,行业标准2 项,发表论文68 篇(SCI 32篇),整体技术居国际领先水平,解决了30 万吨夏秋茶高值化利用,应用区茶农增收1675 元/亩,近3年直接新增产值47 .15 亿元,实现间接效益205 亿元,引领了茶产业综合利用新发展,产生了巨大的经济效益和社会效益. 相似文献
6.
最近几年來本省夏秋茶產量有很大的增長,特别是1955和1956这兩年,可以看出夏秋茶產量在全年茶叶產量中的比重有顯著增大的趋势。由于夏秋茶產量的增加,对补救1955年初的冻害所造成的產量損失起了很大作用,1955年春茶比1954年減產达31159担,但夏秋茶不僅沒有減產,而且还比1954年增產3600多担;並且由于夏 相似文献
7.
8.
通过多年试验、生产实践探明武平炒青绿茶关键温控技术:杀青温度春茶280℃～300℃、夏秋茶240℃～260℃为宜,初炒温度春茶180℃～200℃、夏秋茶150℃～160℃,长炒温度春茶70℃～80℃、夏秋茶60℃～70℃,提香温度春茶110℃～120℃、夏秋茶100℃～110℃为宜. 相似文献
9.
一本省自1952年推廣擴大采摘夏秋茶以來,經过各茶区的努力,特别是在1955年和1956年兩年間的大力宣傳推廣,全省夏秋茶的產量有了顯著的增加。歷年來夏秋茶增產的比例,远远超过全省增產的比例。如果以1954年全省全年的茶叶產量为100,則1955年为93.37%(受冻減產),1956年为106.4%,而夏秋茶產量如果亦以1934年为100,則1955年 相似文献
10.
11.
利用加工方法提高夏秋茶品质研究进展 总被引：5，自引：0，他引：5
夏秋茶叶由于自身品质不高,给其生产、销售带来较大的不利影响,造成资源浪费。本文总结了近15年来国内利用茶叶加工技术杀青、做青、揉捻、干燥等方法提高夏秋茶品质的研究进展。概括了提高夏秋茶品质的加工方法和技术。 相似文献
12.
Effect of Pretilachlor on Weedy Rice and Other Weeds in Wet-Seeded Rice Cultivation in South Vietnam
《Plant Production Science》2013,16(4):315-320
AbstractWet-seeded rice is a common method of sowing in Vietnam. Weeds, including weedy rice, however, are a major problem in this establishment method. A study was conducted in a farmer’s field to evaluate the effect of pretilachlor dose (0, 300, 600, and 900 g ai ha–1) on the management of weedy rice and other weeds in wet-seeded rice cultivation in the spring-summer, summer-autumn, and winter-spring seasons of 2012-13. The herbicide was applied 1 day after sowing. Weeds belonging to the grass, broadleaf, and sedge groups were effectively controlled by the lowest herbicide dose (300 g ha–1). Overall, weed control did not increase with increases in herbicide dose after 300 g ha–1, suggesting the optimum dose for pretilachlor in wet-seeded systems. The application of pretilachlor at 300 g ha–1 significantly reduced the number of weedy rice panicles (20 – 69%) and weedy rice biomass (15 – 26%). The highest pretilachlor dose (i.e., 900 g ha–1), however, was better than the lower doses in reducing the number of weedy rice panicles (47 – 80%) and weedy rice biomass (41 – 54%). The non-treated plots produced a rice grain yield of 210, 2000, and 1850 kg ha–1 in the spring-summer, summer-autumn, and winter-spring seasons, respectively. Compared with the non-treated plots, the lowest dose of pretilachlor improved grain yield. However, maximum yield was obtained by applying the highest dose of pretilachlor; 2690, 4490, and 5150 kg ha–1 in the spring-summer, summer-autumn, and winter-spring seasons, respectively. The results of our study suggest that a broad spectrum of weed flora can be easily managed by a lower dosage of pretilachlor in wet-seeded rice; however, the herbicide dose needs to be increased to 900 g ha–1 in order to decrease the weedy rice problem. 相似文献
13.
23个茄子品种抗热性鉴定及其抗热机理的初步研究 总被引：1，自引：0，他引：1
对引进的23个茄子品种在福建地区利州夏季高温栽培对其抗热性进行鉴定评价.结果表明:参试品种在高温条件下其产量表现较大差异,所有品种均表现较严重的果实表面木栓化,其中海南枕头茄、南京紫长茄、紫苏山奇茄和益农长身红茄表现较好,在高温环境下可获得较高的产量且果实木栓化程度较低;同时也发现,高温条件下不同花柱类型花的比例与其产... 相似文献
14.
油菜黑胫病是双球小球腔菌（Leptosphaeria biglobosa）引起的一种真菌病害,在油菜产区广泛发生。为了解我国特定气候和栽培条件下的流行规律,通过室内试验和田间试验探讨了温度对罹病油菜茎秆上L. biglobosa 假囊壳和子囊孢子发育的影响。室内试验结果表明：在保证环境水分（湿度）充足的条件下,温度影响L. biglobosa 假囊壳和子囊孢子的发育进程。在4℃下培养105 d,成熟假囊壳比例仍低于1%,而在10、15、20和25℃下分别培养66.5、57.9、34.5和47.3 d后,成熟假囊壳比例达到50%。可见,10~25℃较4℃更适合L. biglobosa 假囊壳和子囊孢子发育。武汉的田间试验结果表明：L. biglobosa 越夏后（8月底）,在平均气温26℃和平均降雨量为2.7 mm/d的条件下,经过56.3 d成熟假囊壳的比例达到50%。L. biglobosa 越秋后（10月底）,在平均气温为12℃和平均降雨量为1.5mm/d条件下,仅需28.1 d成熟假囊壳的比例即达到50%。可见秋末冬初的环境条件较夏末秋初更加适合L. biglobosa 假囊壳和子囊孢子发育。研究结果还表明：L. biglobosa 子囊孢子在水琼脂培养基上培养2 h后（20℃）萌发率达到100%,萌发方式是两端细胞先萌发,中间细胞后萌发,子囊孢子能直接侵染油菜子叶,引起坏死病斑。 相似文献
15.
在热区鲜食玉米的种植研究中,针对不同复种季节筛选适应性品种的研究还较少,为满足鲜食玉米多样化的生产需求,在云南热区德宏州芒市进行甜玉米夏秋两熟复种试验,选用当地主栽甜玉米品种‘库普拉’（T1）、‘金中玉’（T2）、‘高原王子’（T3）、‘瑞佳甜1号’（T4）,分析比较各品种两季种植的差异。试验结果表明：两季各品种农艺性状指标差异均达极显著（P<0.01）,T2、T4株高、茎粗均高于T1、T3,秋播平均茎粗、叶面积指数较夏播分别增长8.78%、16.67%,夏播T2叶面积指数较T1增长94.73%,秋播T4较T1株高增长71.76%;两季各品种饲用品质指标差异均达极显著（P<0.01）,T2、T4的综合饲用品质较好,T2夏播粗蛋白（CP）、粗脂肪（EE）含量分别增长5.52%、8.93%,酸性洗涤纤维（ADF）含量有效降低5.21%,秋播T4较T1粗灰分含量降低40.83%;两季各品种产量产值差异均达极显著（P<0.01）,T1、T3产量产值两季均低于T2、T4,秋播平均产量较夏播增长24.68%,平均总收益增加57.83%（约3.32万元/hm2）,其中T2夏播T4秋播可实现全年果穗总产47.2 t/hm2,茎叶总产42.4 t/hm2,总产值11.35万元。综合季节性及品种表现的差异性,T2更适合夏播,T1、T3、T4更适合秋播,其中秋播的3个品种综合表现好,依次为T4>T3>T1,T2夏播、T4秋播搭配种植可实现效益最大化。 相似文献
16.
《Plant Production Science》2013,16(1):105-111
AbstractIn Order To Develop A Cultivation Technique For The Practical Use of Phytoremediation of Diesel-Contaminated Soil, We Evaluated The Rhizodegradation of Diesel-Contaminated Soil Using Italian Ryegrass. Experiments Were Conducted Under Two Different Soil Conditions That Were Expected To Reduce The influence of Diesel On The Plant. Under The First Condition, The initial Diesel Concentration Which Is Expressed in The Total Petroleum Hydrocarbon (Tph) Concentration Was Set To 0.80%. The Concentration Was Almost Half The Upper Limit For The Growth of Italian Ryegrass. Under The Second Condition, Zeolite Was Added To The Experimental Soil To Improve The Cation Exchange Capacity (Cec). in 152 Days Experiments, We Evaluated The Plant Growth Variables, Tph Concentration, Soil Dehydrogenase Activity (Dha) That Is Reflective of The Rhizosphere Microbial Activity, And The Aerobic Bacterial Count. The Results Suggest That The Tph Concentration in First Condition (0.80%) Could Not Bring About A Significant Recovery of Plant Growth. The Plant Growth Observed in First Condition Was Equal To ThatObserved in The Case of The Upper Limit Tph Concentration Used in Our Previous Study. However, Under The Second Condition,It Is Suggested That The Addition of Zeolite Could increase Plant Growth, Which Can in Turn Improve The Rhizodegradation Effect. 相似文献
17.
《Plant Production Science》2013,16(1):20-27
AbstractSeasonal Wetlands, Locally Called Oshanas, Are Characteristic of The Densely Populated Northern Namibia, A Desert Country in Southwest Africa. The Formation of Seasonal Wetlands, Which Will Sustain The Water Balance of A Semiarid Environment, Was Quite Unstable Depending Entirely On The Variable Rainfall in The Upper Catchments of Angola. The Objective of The Present Study Was To Evaluate The Use of Seasonal Wetland Water By Pearl Millet, The Local Staple Food Crop intercropped With Cowpea, To Discuss The Water Competition Pattern of intercropped Species. Root System Development of The intercropped Species Was Also Evaluated Together With The Water Source Analysis. For This Purpose, Field Experiments Using Pearl Millet intercropped With Cowpea in The Seasonal Wetland in Namibia University (Exp. 1) and Monocropped Pearl Millet in The Local Farmers Field (Exp. 2) Were Conducted in Northern Namibia. Both Pearl Millet and Cowpea Developed Deeper Root Systems As The Distance From The Seasonal Wetland Water increased. At Flowering Time, The δD Value of intercropped Cowpea Was Similar To That of Wetland Water, While That in Pearl Millet Was Much Lower Than Those of Both The Wetland Water and Groundwater. This indicated That intercropped Pearl Millet Did Not Have Full Access To The Wetland Water When There Was Competition With Cowpea For Water Derived From Various Water Sources. Under Such Circumstances, intercropped Pearl Millet Probably Relies More On The Rainfall Water, Which Is Just Sufficient To Sustain Its Growth in A Semiarid Environment. By Contrast, intercropped Cowpea Wins in The Competition With Pearl Millet and Can Acquire Water From The Existing Stored Wetland Water. 相似文献
18.
J. Jayaramudu D. Jeevan Prasad Reddy B. R. Guduri A. Varada Rajulu 《Fibers and Polymers》2009,10(3):338-342
The ligno-cellulose natural fabric from the polyalthia cerasoides tree was analyzed by FTIR, chemical, X-ray and thermo gravimetric methods. The morphology of the fibers was studied by scanning
electron and polarized optical microscopic methods. The tensile properties were also studied. The effect of alkali treatment
on the properties of the fabric was studied. The FTIR and chemical analyses indicated lowering of hemi-cellulose and lignin
content on alkali treatment of the fabric. The tensile properties were found to increase on alkali treatment. The x-ray diffraction
revealed an increase in crystallinity of the fabric on alkali treatment. The thermal stability of the fabric was also found
to increase on alkali treatment. The properties of this fabric were compared with those of two natural fabrics reported in
the literature. This uniaxial fabric has sufficient tensile modulus and can be used as reinforcement in the development of
green composites. 相似文献
19.
《Plant Production Science》2013,16(1):57-63
AbstractEven Under Extremely Hot (40ºC) Conditions During Anthesis, Heat-induced Floret Sterility Does Not Appear To Be A Serious Issue For Australian Rice Growers. This Contradicts Previously Reported Temperature Thresholds For Floret Sterility. To Determine The Factors Associated With Stable Rice Production Under Hot and Dry Conditions in The Riverina Region of New South Wales (Australia), We Examined Rice (Cv. ‘Langi’) Pollination At Different Distances From The Windward Edge of A Paddy Field and Its Association With Canopy Microclimate. With An Air Temperature of 34.5ºC and A Relative Humidity of 20.7% During Anthesis, Poor Pollination of Florets Occurred At The Windward Edge, But Pollination Remained Stable Farther From The Edge. The Temperature Difference Between The Air and The Panicles in The Canopy Reached As High As 6.8ºC Under These Conditions Because of Low Humidity and Strong Transpirational Cooling. Moreover, The Length of The Dehiscence At The Base of The Thecae During Anthesis Was Long; This Is A Desirable Trait For Heat Tolerance. The Long Basal Dehiscence of The Thecae of This Cultivar and The Lower Panicle Temperatures Relative To The Ambient Temperature Caused By High Transpirational Cooling Appear To Be The Key Factors Responsible For Stable Pollination Under The Extremely High Temperatures of The Riverina Region. 相似文献