水稻测土配方施肥技术探讨

介绍了测土配方施肥的关键技术,探讨了水稻配方施肥技术,提出了高产水稻施肥参考模式,以期为该技术的推广应用提供参考。     

膜下滴灌水稻的现状及发展趋势概述

膜下滴灌水稻栽培技术是水稻栽培技术的一次革命,本文概述了膜下滴灌水稻栽培方法的发明、研究、产业化推广应用的历史和膜下滴灌水稻栽培方法的意义,并根据该科研成果的意义分析了膜下滴灌水稻栽培的未来发展趋势,为膜下滴灌技术的进一步推广应用奠定了坚实的基础。     

2BTP—56型水稻苗床播种机试验报告

<正> 水稻苗床机械化播种是水稻生产全过程机械化的一个环节。盘锦市水稻机械化播种技术的发展,由于受水稻插秧方式等因素的影响,一直未予以重视。近几年来,水稻软盘育苗机械插秧技术的推广应用,使人们对水稻机械化播种技术有了新的认识。因此,1992年初,我们对南方先进的水稻播种技术进行了详细的考察,并结合我     

"水稻—油菜"全程机械化栽培模式

介绍了"水稻—油菜"栽培模式的意义,总结浦城县"水稻—油菜"全程机械化高效栽培各环节的技术要点,旨在为该栽培模式的推广应用提供技术依据。     

杂交水稻母本抛秧制种技术在广西容县的应用

介绍了杂交水稻母本抛秧制种技术的意义和推广应用的主要障碍,针对母本抛秧与手插的差异,介绍了杂交水稻母本抛秧制种技术在广西容县的应用措施。     

沿海滩涂水稻直播栽培技术

通过对沿海滩涂水稻直播技术的研究,为适应沿海滩涂特殊的生态条件,探索出了沿海滩涂水稻直播栽培技术,为其大面积推广应用提供高效、安全的技术保证.     

水稻酿热物抗低温育苗技术试验研究

通过对水稻酿热物作育苗床,提高水稻苗床温度,增加水稻产量的效果试验,结果表明;水稻酿热物作育苗床可以提高苗床温度、增强秧苗素质、促进分蘖、促使水稻提早成熟、增产增收,酿热物材料来源广泛、技术操作简便、好学易懂,建议推广应用。     

南平市建阳区杂交水稻生产现状与发展对策

通过调查南平市建阳区杂交水稻推广应用情况,分析杂交水稻生产现状,探讨影响南平市建阳区杂交水稻推广应用关键因素和存在问题,提出适应南平市建阳区杂交稻品种合理利用的建议与对策,以期为今后杂交水稻品种的推广应用提供指导。     

水稻直播技术高产高效研究

水稻直播技术作为一种轻简高效栽培技术,适合川东北丘陵区冬闲田推广应用。2010至2012年我们开展了适度规模的水稻直播技术示范研究,平均产量为10 033.5 kg/hm2,比当地水稻平均单产增加30%以上,平均节约劳动力成本等1 725元/hm2以上。     

寒地水稻节水控制灌溉技术研究与探讨

水稻控制灌溉是一种节水栽培新技术。八五二农场生产大面积推广应用该项技术,平均节水70～100 m3/667 m2,节水率达22%～35%。控制灌溉技术在推广应用时,要与垦区应用的"浅、湿、干"灌溉技术有机结合,处理好生产性用水与控制灌溉的关系,同时要与水稻叶龄诊断技术相结合,以更加精准地进行节水灌溉,更好地发挥作用。     

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。     

12份白花泡桐材料亲缘关系的ISSR分析

以‘福桐’、‘绿桐’2个无性系与10个不同种源的白花泡桐个体为研究对象，采用ISSR分子标记对12份白花泡桐材料的亲缘关系进行研究，并利用DPSv3.01进行聚类分析。结果表明：10条引物共扩增出66条条带，其中有37条多态带，多态性比例为56.1%。根据ISSR聚类分析结果，在遗传距离为0.35时，12份白花泡桐材料可分为5类，第1类为‘福桐’无性系与河南、河北种源个体；第2类为‘绿桐’无性系与湖南、湖北、江苏种源个体；第3类为浙江、广东种源个体；第4类为江西、福建种源个体；第5类为广西种源个体。此结果     

龙眼种质资源果实经济性状的稳定性评价

为了探讨龙眼(Dimocarpus longan Lour.)种质果实性状的稳定性,连续3a对40份不同基因型龙眼种质果实数量性状的年际间表现进行测定比较。结果表明,在气候条件差异较大的不同年份,单果重、果皮重、果肉重、种子重、果皮厚、可食率、可溶性固形含量等果实性状均表现丰富的多样性,并存在年际间的显著或极显著水平差异,气候条件对果实数量性状有显著影响;不同性状的稳定性有差异,其中可食率的稳定性最高,其次是可溶性固形物含量。通过聚类分析,可将40份龙眼种质按果实性状稳定性分成7类。