应用不同复合肥增产效果试验研究

研究了氮、磷、钾三元复合肥在水稻上的应用效果。试验结果表明：施用复合肥可促进水稻实现多分蘖、多穗数，结实率高，抗逆性强，千粒重增加，提早成熟，增产效果显著。     

水稻施用大三元复合肥试验总结

通过对水稻施用大三元复合肥试验研究,结果表明:施用大三元复合肥后,水稻的穗数、成粒数、千粒重、产量等都有所提高,增产效果显著。而且,大三元复合肥不但肥效快且长,还具有抗病、抗倒伏的特点,有大面积推广应用的价值。     

水稻施用大三元复合肥试验总结

通过对水稻施用大三元复合肥试验研究，结果表明：施用大三元复合肥后，水稻的穗数、成粒数、千粒重、产量等都有所提高，增产效果显著。而且，大三元复合肥不但肥效快且长，还具有抗病、抗倒伏的特点，有大面积推广应用的价值。     

超级稻肥对杂交水稻的增产效果研究

通过多年、多点、多品种试验,比较研究了超级稻肥对杂交水稻的增产效果。结果表明,超级稻肥作基肥施用,比普通复合肥和单质化肥作基肥施用的处理增产显著。     

水田应用复合肥试验示范

通过对20种复合肥的田间对比试验,结果表明,在水稻的各生育期,生育性状表现较好,增产效果明显,经济效益高的复合肥为苗必壮、西洋、45%开磷、宏福、54%史丹利、金老虎、根来福。     

绿先机、绿聚能两种复合肥对水稻产量及效益的影响

为探讨绿先机、绿聚能复合肥对水稻产量及效益的影响,笔者特设置了此试验,对水稻茎蘖动态、穗部性状、产量及产量构成等进行了测定和比较分析。结果表明,绿先机复合肥提高了水稻的分蘖成穗率;增加了一次枝梗数和二次枝梗数,减少了枝梗退化率;对水稻单位面积穗数、每穗粒数和结实率均有促进作用,进而提高了水稻产量;绿先机复合肥成本较低,可进一步增加水稻的生产效益。     

不同处理的缓释稀土(硅钙)复合肥作基肥对水稻生理和产量的影响

试验通过几种不同处理的缓释稀土(硅钙)复合肥作基肥在膜下滴灌水稻上的运用,对水稻生育期、主要农艺性状、产量和叶绿素、叶面积以及光合影响的对比,得出作为基肥的缓释稀土(硅钙)复合肥对膜下滴灌水稻的综合影响用量50 kg/667 m2>70 kg/667 m2>30 kg/667 m2>空白。     

新型复合肥料肥效试验报告

通过在松南乡黎明村做了几种长效复合肥应用于水稻的效果对比试验,比较出性价比最好的肥料。试验结果表明:使用五洲丰的水稻植株最高、穗最长、穗实粒数最多,汉枫复合肥处理的水稻平方米有效穗数最多,中原复合肥处理的水稻千粒重最高,配方肥的各性状指标一般,但产量最突出。     

"一支花"牌复合肥在水稻上的肥效初报

"一支花"牌40%(含氯)高浓度复合肥系永安智胜化工有限公司从挪威海德鲁引进的生产技术和设备,采用国际先进的喷浆造粒工艺生产而成.为探明该复合肥的肥效,在水稻上与进口复合肥进行了肥效验证试验,现将试验结果整理如下.     

如何使用水稻专用复合肥

水稻专用复合肥是根据水稻在移栽后对氮、磷、钾需求规律研制出来的一种中浓度复合肥,最适作水稻移栽田基肥用。它具有“成本低”、“使用方便”、“返青快”、“安全性好”等特点,使用后能使农作物抗倒伏、抗病虫害能力增强,增产增收效果明显。使用方法:作水稻基肥,用量一般为25kg/667m2,不需再配施其他的化学肥料,施肥后马上可以插秧,不会烧苗。移栽后5～7d再施追肥,用水稻专用复合肥作基肥的移栽田,追肥里氮的数量不变(一般10～15kg/667m2),钾肥数量可以减少一半(籼杂5kg/667m2,粳杂2.5kg/667m2),磷肥可以省略不施。水稻专用复合肥还可以…     

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。