棉花喷施光合作用增效剂对其生长发育的影响

通过在南疆主产棉县阿瓦提县进行棉花喷施不同量的“叶之缘”牌植物光合作用增效剂试验,结果表明：在叶绿素含量上看,不同喷施时期以苗期喷施效果较好,盛蕾期次之,而苗期及蕾期各喷施一次效果最差;在花期不同喷施方法中,以喷施900g／hm^2效果最好,其次为450g／hm^2,喷施时应分;次均匀喷施,间隔时间为10天,单次喷施量不应大于450g／hm^2,不同喷施时期及喷施量对单株铃数影响较大,但差异不显著;对子棉产量、单铃重、衣分、纤维品质均无影响。     

钾肥在棉花上的施用效果初探

本文研究了春棉的干物质积累过程及对Ｋ２Ｏ的吸收规律,不同施钾量防止棉花早衰及对产量的影响。根据棉花的需肥规律研究了适宜的钾肥用量及施用时期。     

棉花蕾铃肥施用时期和量的配比研究

2006～2007年,在蕾铃肥投入等价的条件下,通过有机肥料与无机肥料配合施用比较试验,结果是以有机肥与无机肥配合施用较好,可以提高棉花产量、改善歼维品质且有利于改善棉田土壤结构;施用银科牌棉花专用肥早熟性好,后劲较足.     

艾氟迪（AFD）在棉花上施用时期的研究

通过用艾氟迪（AFD）600ml/hm2在棉花的初花期和盛花期喷施棉株中部的主茎、分枝和叶背,分析其对棉花生长发育和品质的影响,以研究鄱阳湖棉区中等肥力条件下AFD的施用时期。试验结果表明：在棉花的初花期和盛花期喷施艾氟迪（AFD）600ml/hm2均能有效协调棉花营养生长与生殖生长的关系,能够促进花芽分化、减少赘芽,增加单株果节数、促使棉花成铃集中并能改善棉花纤维品质,但略使衣分降低。     

涂层尿素在棉花上的应用效果研究

涂层尿素由于在生产过程中加入尿酶抑制剂和多种微量元素,可以有效地补充作物需要的营养元素,从而起到提高肥效的作用,在棉花上施用比普通尿素施用方便、养分全、增产显著,可提高经济效益为10.6%.     

保水剂对棉花光合作用特性的影响

以大田棉花生产为对照,与使用保水剂的棉花光合特性做比较.结果表明:棉田施用保水剂可使棉花净光合速率趋于稳定,有效提高棉花净光合作用率,并且可调节叶片气孔行为而降低水分蒸腾,提高作物水分利用率,为棉花生理所需要的水分提供了重要保证,从而促进棉花生长,增加棉铃数量,提高棉花产量.     

氮肥增效剂在水稻上的应用效果

采用田间试验方法,研究了"肥德乐"氮肥增效剂在水稻上的应用效果,结果表明:水稻施"肥德乐"氮肥增效剂能促进水稻早熟,增加分蘖数,使氮(N)利用率提高11.6%,增产稻谷81.9 kg/667 m2,增产率达12.9%,经济效益增加157.8元/667 m2。     

肥料增效剂在马铃薯上的应用试验

<正>肥料增效剂为浙江大学研究完成的最新生物科技成果,它是由有益微生物经液体发酵生物技术精制而成,为淡褐色粉剂,有很强的生物活性,对纯天然有机肥和农家肥常见的肥效迟缓、有机复混肥的肥效不理想、化学复混肥含量虽高,但效益较低     

三种调节剂在棉花上的应用研究

随着科学技术的不断进步,新型植物生长调节剂不断出台,应用范围不断扩大。为进一步鉴定各调节剂在棉花上的应用效果,于1992年进行了3种调节剂的比较试验。     

土壤水分胁迫对棉花叶片水分状况及光合作用的影响

在不同程度的水分胁迫条件下 ,棉花叶片水分状况及光合作用有明显的变化。随着干旱程度的加剧 ,盆栽棉花的叶片相对含水量降低 ,水分饱和亏缺明显增大 ,自由水含量降低 ,束缚水含量增加 ,棉花体内代谢水平下降 ;叶面积缩小 ,叶绿素含量下降 ,棉花光合作用能力降低。经分析 ,轻度水分胁迫与对照之间差异不显著 ,中度、重度水分胁迫与对照之间差异均达显著水平。     

A study of physical modification on grey cotton by laser irradiation

The surface morphology of the CO₂ laser treated grey cotton fabrics was studied which showed a characteristics sponge-like structure on cotton fibres after treating with CO₂ laser irradiation. The laser treatment parameters ranging from 100 to 150 pixel time and 40 to 70 dot per inch (dpi) were irradiated on the grey cotton fabrics directly and the degree of physical modifications, such as surface morphology, wettability and fabric strength, were changed accordingly with various laser treatment parameters. The surface morphology, wettability and tensile strength of cotton fibre treating with laser were evaluated using different instruments, such as Scanning Electron Microscope (SEM), contact angle meter and tensile strength machine. In spite of creating a sponge-like structure on fibre surface after treating with laser, the wettability of the samples was highly improved but the tensile strength was decreased.     

A comprehensive study of silicone-based cosmetic textile agent

In recent years, textile materials have also found applications in the cosmetic field as more and more commercial cosmetic textile agents are now available in the market. In this paper, one commercially available cosmetic textile agent (CTA) for skin caring benefits was used for making the cosmetic textiles. Systematic characterization methods were established to assess their performance in terms of material identification, fabric performance properties as well as biological safety and biological response to human skin. The experimental results showed that after the treatment of cosmetic textile agent, the fiber surface was covered with a thin layer of smooth material, thereby contributing several alterations to fabric properties and providing a better hand feel to human body. The durability of cosmetic textile was considerably satisfactory with respect to the abrasion resistance and washing cycles. The experimental results also illustrated that the cosmetic textiles might probably enhance the replacement of cells with the newly regenerated ones in the skin structure of human body, and thus provided a more efficient turning-over and replacement of skin components.     

A study of metal oxide on antimicrobial effect of plasma pre-treated cotton fabric

Cotton, a natural fibre that consists of cellulose, is highly popular because it is sweat-absorbing and comfortable to wear. However, cotton fabrics provide an excellent environment for microorganisms to grow, owing to their ability to retain moisture. Therefore, numerous chemicals have been used to enhance anti-microbial activity of cotton textiles. This paper reports results of use of silver oxide (Ag₂O) or zinc oxide (ZnO) as a catalyst in the antimicrobial formulation (halogenated phenoxy compound (Microfresh, MF)) and a binder (Microban, MB) for improved treatment of cotton fabrics and minimisation of side effects of the treatment. In addition, from the morphological study, plasma technology was employed to roughen the surface of the materials to improve loading of metal oxides on the surface. Moreover, the characteristic infra-red bands related to plasma-treated cotton produced results different from untreated fabric, implying plasma treatment can improve hydrophilicity of the fabric. Mechanical strength of the specimens was also increased by plasma treatment. Meanwhile, the research showed that the control fabric slightly inhibited the growth of S. aureus because of the bleach residues on fabric surface. On the other hand, anti-bacterial activity of MF-MB-treated specimen, especially in the presence of metal oxide catalyst, was enhanced, providing a slightly larger zone of inhibition. Moreover, plasma gas contains reactive oxygen species that can enter the cell, eventually causing its death. The hydrophilic nature of carbonyl groups present in oxygen plasma pre-treated specimens also increased the anti-microbial activity after treatment with MF-MB.     

几种农药防治棉铃虫的药效试验

近年业棉铃虫发生严重、危害猖獗,抗药性增强,给该虫的治理工作,尤其是治虫药剂的选用带来一定的困难。本试验通过对引进的７种国外新农药单独使用或复配使用,于棉田二、三、四代棉铃虫卵期、卵孵盛期和１、２龄幼虫高峰期进行了室内外药效试验,初步筛选出室内杀卵效果７９．１８％－９１．６９％;田间产卵盛期（初产白色卵占８０％左右）防效８０．２８％－９３．４９％,卵孵高峰期（黑色卵占８０％左右）防效８４．０３％     

那氏778诱导剂在棉花上的应用初报

那氏 778诱导剂 (ＧＰＩＴ)是以抗冷耐冻抗氧化 ,以提高光合作用为中心 ;强生理代谢为基础 ,综合抗逆为特征的作物潜能优良性状 ;既是一种作物基因表型诱导调控的新技术 ,又是“抗逆、早熟、高产、优质、无污染”的世界首创和领先的高新科技生物基因工程技术。正确合理使用时对农作物抗病、抗寒、抗冷冻、避虫、耐虫、耐酸雨、抗倒伏、能使作物省肥高产等综合能力都有提高的重大作用。为了摸索那氏 778诱导剂在棉花上的应用试验效果 ,为生产中推广应用提供科学依据。现将试验情况初报如下 :1　试验处理 :试验田设在九江市农科所平阳坂生产试…     

缩节胺在棉花生产上的应用研究概述

缩节胺(DPC)是一种外源的植物生长调节剂,它可以调控作物的生长发育、长势和成熟性,在中国不同生态类型的棉田均有应用。通过总结前人的研究成果,概括了缩节胺化学调控技术在棉花生产中的应用现状,分析了缩节胺化控对棉花早衰及产量和品质的影响。     

新疆南疆陆地棉化学封顶剂示范效果

选用新陆中48号,使用无人机喷施化学封顶剂“摇钱素”（质量分数20%的矮壮·甲哌钅翁 水剂）,以人工打顶为对照,探索化学封顶剂对新疆南疆棉花产量和纤维品质的影响。结果表明：与人工打顶相比,喷施“摇钱素”封顶的棉花株高增加17.1 cm,单株结铃数增加1.1,衣分高1.2百分点,籽指高0.22 g,衣指高0.62 g。喷施“摇钱素”封顶的棉花666.7 m²籽棉产量、皮棉产量和纺纱均匀性指数、纤维上半部平均长度、长度整齐度指数、断裂比强度均高于人工打顶。可见,无人机喷施“摇钱素”封顶可有效抑制棉花顶端优势,降低人工成本和生产成本,不会降低产量和纤维品质,可替代传统人工打顶。     

三种拌种剂防治棉花苗期病害的药效试验

试验表明,益苗种表剂、拌种王、拌丰王对棉花红腐病的田间防效分别为74．4％、57．5％、55．3％;对舞花炭疽病的田间防效分别为77．9％、59．2％、24．9％。益苗种表剂时棉花两种苗期病害的防效显著优于拌种王与拌丰王。     

棉花间作花生试验的效应研究

棉花间作花生是一种集约利用农业资源，提高土壤肥力的优化种植模式，在生态条件相近的地区推广，具有很高的产量、经济、生态和社会效益。     

A study of reusing vinyl sulfone based reactive dye for dyeing cotton fiber

Reactive dye is a popular dye for dyeing cotton fiber due to its very good color fastness which is explained by the formation of covalent bond between dye and fiber. In this study, practicality of reuse of reactive dye by compensating for the hydrolyzed part of the dye solution is examined. A monofunctional dye (vinyl sulfone type) was used and it was found that dyeing cotton fiber with reused dyebath is possible. Since bifunctional dye can improve the chance of dye-fiber bond formation, vinyl sulfone based bifunctional reactive dyes were also selected in this study. Three types of bifunctional dyes were used and they basically share the same vinyl sulfone group; other reactive groups are monochlorotriazine, dichlorotriazine and vinyl sulfone. Such dyes were chosen in order to compare their respective efficiencies under the effect of one common reactive group. The aim of this study was to compare the effect of hydrolyzed and unhydrolyzed proportions of mono-and bifunctional reactive dyes on cotton fiber and study the possibility and efficiency of the two different reuse dyebath systems.