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夏大豆的产量潜力与高产栽培技术 总被引：5，自引：2，他引：5
本文通过对大豆的产量构成因素，耕作栽培条件对产量的影响，河南大豆生产中存在的问题，省内外的高产实例四个方面，分析了夏大豆的产量潜力，并针对目前河南大豆单产水平较低的状况及高产经验，提出了以选用优良品种为基础，以培育壮苗全苗为前提，以精细管理为保证，配合应用植物生长调节剂等六条高产栽培措施。 相似文献
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崔文馥 《中国油料作物学报》1989,(3)
植物生长调节剂在1896年发现。之后又相继发现多种药物能影响植物正常生化过程,某一用量能刺激植物生长,另一用量则抑制生长。近十余年来,农业化学化的一个重要方面是将生长调节剂用于调节植物生长、脱叶、催熟,以至增加产量。在结构或功能上与天然生长调节剂相似的合成调节剂,已有5000余种,实用的仅约1％。植物生长调节剂的理论研究,着重于其在植物体内的生物合成与转化调节作用机制,阐明其调节植物生长发育的机理。在农业生产实践中,应用于培育新品种及改善栽培生理状况,使大豆的产量及含油 相似文献
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不同植物生长调节剂对大豆根系生理代谢的影响 总被引：2，自引：0，他引：2
为探明不同植物生长调节剂对大豆根系生理代谢的影响，以垦农4号为材料，在R5期叶面喷施3种不同植物生长调节剂，测定了根系活力、硝态氮、可溶性糖等指标。结果表明：SOD模拟物（SODM）、氯化胆碱（Cc）和2-N，N-二乙氨基乙基己酸酯（DTA-6）提高了大豆的根系活力，其中SODM处理明显增加了根系内游离氨基酸积累量和输出量。并在喷药后5—30d，SODM和DTA-6提高了根系内硝态氮、可溶性糖以及可溶性蛋白含量，这为根系生长的良性循环提供了有力的保证。而在喷药后30d内，氯化胆碱处理下的各生理指标变化波动较大。综合分析表明，植物生长调节剂可以改善大豆根系内同化物代谢水平，促进根系的正常生长发育。 相似文献
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烯效唑培育大豆壮苗提高移栽成活率效果研究 总被引：1，自引：0，他引：1
利用植物生长调节剂控制和调节作物的生长发育，使其增加产量，改善品质，已成为现代化农业的新技术之一。烯效唑（Ｓ３３０７，Ｕｎｉｃｏｎｚｏｌ）是一种新型植物生长延缓物质，它具有高活性、低残留和使用安全等优点。目前已在水稻、油菜、蔬菜等物作上应用，但在大豆... 相似文献
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为明确两种新型植物生长调节剂对大豆生长的影响,促进新型调节剂的实际应用,以大豆合丰50为试验材料,在大田栽培条件下,研究不同浓度梯度的新型植物生长调节剂AP_2和CGR_3浸种对大豆光合生理特性及产量的调控效应。在大豆盛花期(R~2)和盛荚期(R4)通过测定叶片叶绿素含量、净光合速率、蒸腾速率、气孔导度和叶片胞间CO_2浓度,分析了两种植物生长调节剂浸种对大豆光合特性及产量的调控效应。结果表明:两种植物生长调节剂在适宜的浓度下均可使大豆有不同程度的增产,其中100 mg·L~(-1)AP_2和50 mg·L~(-1)CGR_3浸种浓度处理使合丰50的产量较对照分别提高18.90%和11.30%。应用两种植物生长调节剂提高了大豆叶片SPAD值、净光合速率。由此,初步推断AP_2和CGR_3使大豆增产可能与调节剂对叶片光合生理的调控作用密切相关。 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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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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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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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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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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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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M. D. Harrison Gestur Johnson R. D. Barmington 《American Journal of Potato Research》1970,47(10):386-393
A broadcast application of PCNB (Terraclor) resulted in a reasonably uniform distribution of the chemical in the soil with the concentration decreasing in a linear fashion with increasing depth in the soil profile. A banded application resuluted in a considerably higher chemical concentration at the 4–6 inch depth than at the 0–2 or the 2–4 inch depths. The problem of the lack of uniformity of chemical distribution could probably be solved by altering nozzle placement and size and allow use of the band method of application to minimize grower cost. More complete disking in the case of the broadcast treatment would probably result in a relatively uniform distribution of the chemical but at higher cost to the grower. PCNB application rates of 10, 15 and 25 lbs per acre broadcast and 71/2, 10 and 121/2 lbs per acre in a band significantly reduced the severity ofRhizoctonia infection of Russet Burbank potatoes but did not increase potato yields significantly. 相似文献
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P. Mésochina W. Martin-Rosset † J.-L. Peyraud ‡ P. Duncan § D. Micol† S. Boulot¶ 《Grass and Forage Science》1998,53(2):189-196
Data from in vivo digestibility trial with four to six horses fed twenty-seven forage-based diets are used to calculate prediction equations for the digestibility of dry and organic matter, based on the crude ash (CA), crude protein (CP) and crude fibre (CF) contents of diets and faeces. The most precise prediction of dry-matter digestibility (r.s.d. = 0.032, R2= 0.80) was derived from a multiple regression including faecal (CP, CF) and dietary parameters (CF). Among faecal parameters, CP was the best single predictor of both digestibility (r.s.d) = 0.040, r2= 0.63) and dietary CP content (r.s.d = 0.028, r2= 0.59). For biological reasons we propose a non-linear model that allows prediction of dry- and organic-matter digestibility from faecal CP Content with reasonable Precision (r.s.d = 0.038, 0.036, r2= 0.65, 0.74, respectively). This will be adequate for many studies, especially for free-living animals in rangelands. 相似文献
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橡胶树丛枝病病原的抗血清制备与应用 总被引：5，自引：1，他引：4
以感染橡胶树丛枝病病原的长春花为材料,制备得到橡胶丛枝病病原菌抽提液,以抽提液为抗原免疫家兔,制备抗血清,经微量沉淀测定,抗血清效价为１：２０４８。应用橡胶丛枝病抗血清检测橡胶褐皮病,无症苗木检出率达３０％－３７％,可疑的褐皮病树检出率达８５．７％。 相似文献