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吉林省的旱稻研究及其发展前景 总被引：1，自引：0，他引：1
从历年研究课题和取得的科研成果两方面回顾了吉林省旱稻研究的历史过程;客观地分析了旱稻研究的现状,从承担国家旱稻品种试验到旱稻栽培和新品种选育研究,并介绍了旱稻研究存在的主要问题;种植旱稻是实现节水农业的有效途径之一,研究领域和前景十分广阔。 相似文献
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旱稻生产现状分析及发展策略 总被引：12，自引：0，他引：12
论述了发展旱稻生产的意义,从种植分布、种植方式、品种资源等方面分析了旱稻生产的现状,从根系特征特性、产量及构成因素、抗旱形态特征等方面分析了旱稻的抗旱机理,综述了旱稻栽培技术的发展情况,在此基础上提出了发展旱稻生产的策略. 相似文献
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节水抗旱稻（Water-saving and drought-resistance rice,WDR）是指既具有水稻高产优质特性,又具有旱稻节水抗旱特性的一种新的栽培稻类型（NY/T 2862-2015）,是在水稻科技进步的基础上,通过进一步整合现代优良水稻与旱稻品种的优良特性而成。节水抗旱稻的节水、抗旱和耐直播能力较强,可采用“旱直播旱管”的绿色栽培模式,可在水田不淹水栽培,大幅度节约灌溉用水,减少面源污染和甲烷排放,也可在旱地或山坡地种植,拓展水稻种植空间。本文简要介绍了节水抗旱稻的概念、特点以及培育与改良策略,表列了团队育成审定的23个节水抗旱稻品种及各自主要特点及适种区域,对节水抗旱稻的产业发展目标进行了讨论。 相似文献
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本文概述了早稻的分布、现状及其在我国的发展;并介绍了旱稻品种和抗旱性的研究;对旱稻起源的二种看法作了一些分析,认为早稻直接起源于野生稻的可能性较大;以及对多年生早稻的选育作了初步探讨。 相似文献
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丹旱稻4号是丹东农业科学院选育的节水型旱稻新品种。全生育日数149 d左右,属于中晚熟品种,抗旱性较强,抗稻瘟病性中等,抗倒性强,2 a区域试验平均产量376.65 kg/667 m2,比对照品种旱稻297增产10.39%。主要栽培环节,一是一次播种保全苗,二是防除田间杂草,同时要求各项栽培技术必须配套。 相似文献
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针对豫北地区的大豆生产现状，从气候、土壤、品种、生态因素及市场需求等方面提出了优质大豆的发展策略与途径。 相似文献
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Irrigation of Netted Gem potatoes was scheduled during three growing seasons by three methods: (a) when plants displayed first visual symptoms of moisture stress, (b) when indicated by a soil moisture budget involving estimated evapotranspiration, and (c) on the basis of tensiometer readings of soil moisture suction. When the tensiometer method of scheduling was used, the mean yields of tubers were 55.0 and 25.8 cwt/acre (6160 and 2890 kg/ha) higher than those obtained with the other two scheduling methods. Methods did not affect the specific gravity of potatoes. Method (a) scheduled irrigations least frequently. Scheduling by the budget method was not always adequate because it was based on the assumption that the crop extracted water from a constant 4 ft (1.2 m) profile from planting to full vegetative growth. In one year the budget method scheduled the first irrigation earlier than necessary and delayed the second irrigation during a critical period of crop growth. From full vegetative cover to harvest the irrigation schedules were alike for both the budget and tensiometer methods. 相似文献
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以长沙县高桥相同嫩度茶鲜叶原料采用卷曲形毛尖茶加工工艺制绿茶为对照,分别对沅陵县齐眉翠峰、凤娇碣滩茶、干发茶和军大坪茶4种绿茶的主要生化成分与感官品质进行初步分析。结果表明,沅陵4种绿茶的茶多酚总量28.76%~30.34%,游离氨基酸总量2.35%~3.22%,咖啡碱含量3.00%~3.63%,水浸出物含量37.26%~40.07%,可溶性糖总量5.46%~5.65%,可溶性蛋白含量1.50%~1.74%,类黄酮化合物总量1.16%~1.79%,叶绿素总量1.36%~2.01%,儿茶素总量13.53%~16.20%。与对照相比,4种绿茶的茶多酚、可溶性糖和儿茶素总量均高于对照,除齐眉翠峰外其余3种茶样水浸出物和叶绿素总量均高于对照,除干发茶外其余3种茶样类黄酮化合物总量均高于对照。 相似文献
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1 吉林省平安农业科学院大豆研究工作简介吉林省平安农业科学院大豆研究所 ,设在吉林省长春市西安大路种子大厦内。现有科技人员 6人 ,其中研究员 2人 ,农艺师 2人 ,技术员 2人 ,定向培养研究生 2人。大豆研究所的主要任务是选育稳产、高产、优质及抗病虫大豆新品种 ;同时密切 相似文献
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Sena L.P. VanderJagt D.J. Rivera C. Tsin A.T.C. Muhamadu I. Mahamadou O. Millson M. Pastuszyn A. Glew R.H. 《Plant foods for human nutrition (Dordrecht, Netherlands)》1998,52(1):17-30
In the western Sahel, indigenous plants become important staples when cereal harvests are inadequate to support populations inhabiting that region of Africa. The purpose of this study was to assess the nutrient content of several of these edible wild plants. The leaves of the following seven plant foods were analyzed: Ziziphus mauritiana, Cerathotheca sesamoides, Moringa oleifera, Leptadenia hastata, Hibiscus sabdarifa, Amaranthus viridi, and Adansonia digitata. The fatty acid, vitamin E, carotenoid, selected mineral and amino acid contents of these plant foods were determined. These same analyses were performed on the fruit of the Adansonia digitata. In quantitative and qualitative terms, Amaranthus viridis was found to be an excellent source of protein. Its amino acid composition compared favorably to that of a World Health Organization (WHO) protein standard. It also contained considerable amounts of the two fatty acids that are essential in humans (linoleic and -linolenic) and a number of minerals including iron, magnesium, calcium and zinc. The leaves of Hibiscus sabdarifa contained an appreciable quantity of protein the composition of which was comparable to the WHO standard. The mineral content of the leaves of this plant was also exceptionally high; noteworthy was its high zinc content. H. sabdarifa also contained significant quantities of the two essential fatty acids. Ziziphus mauritiana was an excellent source of the essential fatty acid linoleic acid and several of the metals including iron, calcium, magnesium and zinc. Its content of other essential nutrients, however, was rather low. In general, Adansonia digitata leaves were nutritionally superior to the fruit of the tree; however, the fruit did contain useful quantities of potassium, phosphorus, zinc and -linolenic acid. The Leptadenia hastata leaves were an especially good source of lutein and -carotene. These data should be useful to the people who inhabit the western Sahel in helping them devise healthy diets during times when cereal staples are in short supply. 相似文献
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通过电解质外渗法和匍匐茎恢复试验对‘阳江’狗牙根及其12个通过形态鉴定选出的坪用价值高且花序密度低的诱变后代进行抗寒性鉴定。电解质外渗法结果表明:诱变后代间的抗寒性具有较大差异,其叶片半致死温度(LT50)的变异范围为-7.6～-0.2℃(最低值与最大值相差7.4℃);参试材料抗寒性由强到弱依次为M18>M4>M26>M28> M22>阳江>M29>M31>M10>M37>M16>M1>M25,其中,有5个诱变后代抗寒性优于亲本,分别是M18、M4、M26、M28、M22。匍匐茎恢复实验结果表明:诱变后代M1、M22、M26、M31、M25在0℃和-5℃低温胁迫后的恢复生长率都高于亲本,恢复能力均优于亲本;M10、M37、M28在-5℃低温胁迫下,恢复生长能力低于亲本,抗寒性相对较弱,M16和M4在0℃和-5℃低温胁迫下,恢复生长率都低于亲本,抗寒性明显弱于亲本。综合2种方法鉴定结果显示:诱变后代M1、M25的恢复能力较强;M4、M28的叶片抗寒性较好,青绿期较长;M22、M18、M26的叶片抗寒性和匍匐茎恢复能力均较强;M29,M31的叶片抗寒性和匍匐茎恢复能力与亲本相似;M10、M16、M37的叶片抗寒性和匍匐茎恢复能力均较弱,整体抗寒性较弱。 相似文献
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实施茶叶优势区域规划促进川茶产业持续发展 总被引：1，自引：0，他引：1
为了充分发挥四川茶叶的比较优势和自然资源优势,进一步提高川茶产业竞争力和促进农民增收,在四川省委、省政府重视下,在开展特色茶叶产品研究的基础上,制订了<四川省茶叶优势区域规划>,以期通过"规划"的实施,在基地建设、规模化生产、产业化经营等方面取得新的突破,为四川省盆周山区和丘陵地区的农村经济发展和农民增收做出新的更大贡献. 相似文献