2018年新疆棉花主要病虫害发生趋势预报

根据2017年秋季棉花病虫害越冬基数、品种布局、气候条件等因素综合分析,预测了新疆维吾尔自治区2018年棉花主要病虫害总体发生趋势,为做好全区棉花病虫害防治工作提供参考。     

2019年新疆棉花主要病虫害发生趋势预报

根据2018年秋季棉花病虫害越冬基数、品种布局、气候条件等因素综合分析,预测了新疆维吾尔自治区2019年棉花主要病虫害总体发生趋势,为做好全区棉花病虫害防治工作提供参考。     

2011年新疆兵团棉花病虫害发生特点及原因分析

 介绍了2011年新疆兵团棉花病虫害的发生概况,总结了棉铃虫、棉蚜、棉叶螨、棉蓟马、棉盲蝽以及棉花苗期病害、棉花枯、黄萎病等主要病虫害的发生特点,分析了2011年棉花病虫害发生的主要原因。     

2021年新疆棉花重大病虫害发生趋势

根据2020年新疆维吾尔自治区棉花主要病虫害发生情况,结合越冬基数、气候条件等因素,预测了2021年棉花重大病虫害发生趋势,为及时做好新疆棉花病虫害防控工作提供参考。     

我国棉花病虫害综合防治研究的现状及展望

对我国棉花病虫害综合防治研究的现状、存在的问题等方面进行了初步的概述。同时,针对我国棉花病虫害综合防治研究中所存在的若干问题,提出了今后棉花病虫害综合防治应采取的对策及发展方向。     

2022年新疆生产建设兵团棉花主要病虫害发生趋势预测

为了有效加强对新疆生产建设兵团棉花病虫害防控的指导,总结了近期会商预测的2022年棉花病虫害发生趋势及其依据。综合分析2021年秋季棉花病虫害越冬基数、历年病虫害发生情况、种植结构和气候条件等因素,预计2022年新疆生产建设兵团棉花主要病虫害整体中等发生,局地偏重发生,累计发生165.33万公顷次。其中：虫害发生130.66万公顷次,病害发生34.67万公顷次;棉花蚜虫、棉叶螨、棉蓟马中等偏重发生,棉花蚜虫在局地有重发趋势;棉铃虫、棉盲蝽偏轻发生;苗期病害局地中等发生;黄萎病中等发生,局地偏重发生;枯萎病中等偏轻发生。     

苏淮北地区棉花苗期病虫害的综合防治措施

苏淮北地区是江苏省棉花生产的主产区,棉花苗期病虫害如立枯病、炭疽病、棉蚜、红蜘蛛、地老虎等发生最为普遍,为害相当严重。为进一步普及优质棉花种植技术,提高单产,笔者认为要从控制棉花苗期病虫害入手,认真做到预防为主、综合防治。     

新疆兵团棉花中后期主要病虫害发生趋势及防治对策

 依据新疆兵团植棉垦区棉花病虫害前期发生特点,结合棉花品种布局、气象条件等因素,综合分析了2012年兵团棉花中后期主要病虫害发生趋势,并提出了相应的防治对策。     

2018年新疆棉花主要病虫害前期发生概况及中后期发生趋势预报

介绍了2018年新疆棉花主要病虫害前期发生情况，结合气候条件等因素，预测了2018年棉花主要病虫害中后期总体发生趋势，为及时做好新疆棉花病虫害防控工作提供参考。     

2020年新疆兵团棉花前期主要病虫害发生情况及中后期防控技术

介绍了2020年新疆生产建设兵团棉花主要病虫害前期发生情况,提出棉花病虫害防治策略及中后期防控技术,为做好兵团棉花铃期防病虫保铃保蕾及棉花丰产丰收提供参考。     

豫北优质大豆产业发展策略

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。     

Comparisons of methods of scheduling irrigations of potatoes

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.     

吉林省平安农业科学院大豆所大豆研究工作报告

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     

湖南沅陵4种绿茶品质成分分析

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。     

Analysis of nutritional components of eight famine foods of the Republic of Niger

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.     

防治水稻潜叶蝇的药剂筛选

通过对防治水稻潜叶蝇不同药剂、不同用量的田间对比试验,结果表明,32 g/kg的35%丁硫克百威拌种预防潜叶蝇效果最好,药效可达55 d以上,适宜在生产上推广应用。     

狗牙根诱变后代抗寒性评价

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。     

芦笋枯萎病病原鉴定

对造成福建省漳州市东山县的芦笋枯萎病病原菌进行分子鉴定,以期确定病原菌的属、种名,为防治该病害寻求理论依据。试验对分离纯化的病原菌核糖体DNA的ITS区进行测序,在Genbank中搜索其同源性并构建它们的系统发育树,结果表明：引起芦笋枯萎病的病原菌是镰刀属中的尖孢镰刀菌(Fusarium oxysporum),且病原菌之间的同源性高达89%,遗传差异不显著。     

实施茶叶优势区域规划促进川茶产业持续发展

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.