海伦直播甜菜田化学除草试验示范

为探讨除草剂单用和混配以及苗前和苗后处理方式对除草效果的影响,以期为实践甜菜全程机械化和安全性生产提供可靠依据,对提高甜菜质量和产量、增加经济效益都有十分重要的意义,特设此试验.从试验结果看,在甜菜播种后、出苗前,即施药应在播后3天内施药,每公顷用96％金都尔乳油18000毫升兑水600公斤进行土壤喷雾处理.甜菜出苗后,在杂草2-4叶期,每公顷用用16％甜安宁乳油6000毫升和12.5％稀禾啶乳油1500毫升,兑水600公斤茎叶喷雾处理效果最好,建议大面积推广.     

除草剂对免耕直播甜菜除草效果评价

使用乙氧呋草黄,甜安宁及二氯吡啶酸等除草剂在免耕直播甜菜田苗前及苗后进行除阔叶除草方面处理,试验表明：直播免耕田甜菜杂草防除有两个关键时期,即播后苗前时期和杂草2-4片叶时期.从播后苗前第一次喷施开始,经过5次喷施,可以实现较理想的除草效果.播后苗前喷施乙氧呋草黄进行苗前处理;在甜菜苗期,杂草2-4片叶时乙氧呋草黄与甜菜安宁、甲酯化植物油配合使用可以达到较好的防除效果.     

浅谈甜菜含杂对制糖生产的影响

1引言在制糖工业生产中,对甜菜质量的要求一般从以下几个大的方面去考虑,一是甜菜的含糖,含糖越高越好,正常甜菜的含糖一般在16％以上月外要求在16．3％～16．9％以上;二是原汁纯度,原汁纯度越高越好,正常的甜菜一般应在82％～84％以上;三是甜菜的含杂,这里的含杂专指甜菜在收获、切削。运输、保藏及二次倒运等过程中带入的杂质,主要有青项、杂草、尾根、叶柄以及泥土、砂石等,这些杂质的大量带入对制糖工业生产是非常有害的。2甜菜含杂的种类甜菜含杂主要有以下两方面：一是甜菜青顶、尾根;二是泥沙、杂草等,其中包括甜菜本身…     

甜菜地杂草的发生与化学防除

黑龙江省甜菜地杂草种类繁多,分属二十科三十六种,发生普遍。60％以上杂草多发生于5月下旬至6月中旬. 1980～1983年对几种除草剂进行了不同剂量,不同施药时期、不同施药方法的研究.肯定了拿捕净(1.5公升/公顷):稳杀得(1公升/公顷);禾草灵(2～3公升/公顷)对防除稗草、野燕麦、狗尾草;甜菜灵、甜安宁对防蓼、藜、苋等阔叶杂草;匹拉杜耳防单、双子叶杂草都有显著效果并进一步研究出上述除草剂的适宜混用、配比搭配兼治单、双子叶杂草的有效方法.确认禾草灵和甜安宁(或甜菜灵),稳杀得和甜安宁(或甜菜灵),特别是拿捕净混用甜安宁(或甜菜灵)除草效果最好.     

除草剂混施 施药时间的选择及施药量对三氟化硫防除甜菜杂草的影响

评价阔叶杂草防除的田间试验所用的除草剂采用两种施用方法，一种是三氟化硫单施，另一种是将几种注册适用于甜菜的除草剂混合施用。结果表明，单施或者继一种土壤处理剂后施用三氟化硫时，对于防除反枝苋、藜、茄科杂草以及地肤等杂草时不能取得令人满意而持久的效果。而当将三氟化硫与ｄｅｓｍｅｄｉｐｈａｍ、甜菜宁混合后再施用，并在杂草稍大一点儿的后期补施，防除效果就较为持久而且有成效。与单施甜菜宁和ｄｅｓｍ相比，三氟     

使用爱捷防除甜菜地杂草的试验

每化顷用１０％爱捷乳油（Ａｇｉｌ１００ＥＣ）６７５－９７５ｍｌ适期喷施甜菜地，可有效防除禾本科杂草。     

甜安宁在甜菜上的残留动态研究

本文报道了甜安宁在甜菜叶及块根中的残留动态及最终残留水平,研究结果表明,在施用16％甜安宁乳油6.0L/ha的条件下,甜菜叶中半衰期为11～12小时,甜菜块根中最终残留量未检出,对甜菜无残留污染。     

甜菜纸筒育苗苗床应用拿捕净试验

通过在甜菜纸筒育苗苗床上喷施12．5％拿捕净（稀禾啶）,配制成的浓度为2．5‰、5‰、16‰、50‰,观察苗床甜菜幼苗和禾本科杂草状况。试验结果表明,拿捕净在甜菜苗床上防治禾本科杂草安全有效,可以推广应用。     

金都尔乳油防除甜菜田间杂草试验

针对新疆博州地区甜菜种植面积逐年增大,田间草害严重,直接影响甜菜产量,人工除草既费时又费工,并且劳动强度大这一问题,博州植保站选用金都尔乳油对甜菜田间杂草进行防除试验。     

使用呋喃丹防治甜菜苗期害虫

试验表明３５％呋喃丹种衣防治剂甜菜苗期害虫，效果优于上多年使用的３５％甲基硫环磷乳油和甲基１６０５粉剂，可作为防治甜菜苗期害虫的轮换用药，建议在生产中推广使用。     

Reliable identification of grapevine rootstock varieties using RAPD PCR on woody samples

Since grapevine ( Vitis spp .) rootstock material is being traded increasingly as disbudded woody material a lack of distinctive morphological features on such material necessitates an alternative and reliable means of identification. Methods described here were developed for rapid and efficient extraction of DNA from woody samples rich in phenolic compounds and polysaccharides, and for subsequent identification of varieties by RAPD PCR. Using these methods, and with the application of only one selected RAPD primer, we were able to differentiate sixteen rootstock varieties, including the seven varieties most commonly used in Germany. Problems commonly encountered with reproducibility of RAPD patterns were avoided by choosing primers with a dinucleotide sequence and a high G/C content that allowed a rather high annealing temperature of 45°C. Methods described here should also be useful for other horticultural crops, especially those with woody tissues rich in phenolic compounds and polysaccharides.     

Aroma characterization of various apricot varieties using headspace–solid phase microextraction combined with gas chromatography–mass spectrometry and gas chromatography–olfactometry

The characterization of the aromatic profile of several apricot cultivars with molecular tracers in order to obtain objective data concerning the aromatic quality of this fruit was undertaken using headspace–solid phase microextraction (HS–SPME). Six apricot cultivars were selected according to their organoleptic characteristics: Iranien, Orangered, Goldrich, Hargrand, Rouge du Roussillon and A4025. The aromatic intensity of these varieties measured by HS–SPME–Olfactometry were defined and classified according to the presence and the intensity of grassy, fruity and apricot like notes. In the six varieties, 23 common volatile compounds were identified by HS–SPME–GC–MS. Finally, 10 compounds, ethyl acetate, hexyl acetate, limonene, β-cyclocitral, γ-decalactone, 6-methyl-5-hepten-2-one, linalool, β-ionone, menthone and (E)-hexen-2-al were recognized by HS–SPME–GC–O as responsible of the aromatic notes involved in apricot aroma and considered as molecular tracers of apricot aromatic quality which could be utilized to discriminate apricot varieties.     

Tests of potential functional barriers for laminated multilayer food packages. Part I: Low molecular weight permeants

The advent of the functional barrier concept in food packaging has brought with it a requirement for fast tests of permeation through potential barrier materials. In such tests it would be convenient for both foodstuffs and materials below the functional barrier (sub-barrier materials) to be represented by standard simulants. By means of inverse gas chromatography, liquid paraffin spiked with appropriate permeants was considered as a potential simulant of sub-barrier materials based on polypropylene (PP) or similar polyolefins. Experiments were performed to characterize the kinetics of the permeation of low molecular weight model permeants (octene, toluene and isopropanol) from liquid paraffin, through a surrogate potential functional barrier (25 μm-thick oriented PP) into the food simulants olive oil and 3% (w/v) acetic acid. These permeation results were interpreted in terms of three permeation kinetic models regarding the solubility of a particular model permeant in the post-barrier medium (i.e. the food simulant). The results obtained justify the development and evaluation of liquid sub-barrier simulants that would allow flexible yet rigorous testing of new laminated multilayer packaging materials.     

Analysis of benzo[a]pyrene in spiked fatty foods by second derivative synchronous spectrofluorimetry after microwave-assisted treatment of samples

A simple, rapid and inexpensive method has been developed for the determination of benzo[a     

The development of reference materials for paralytic shellfish poisoning toxins in lyophilized mussel. II: Certification study

This paper describes the second part of a project undertaken to develop certified mussel reference materials for paralytic shellfish poisoning toxins. In the first part two interlaboratory studies were undertaken to investigate the performance of the analytical methodology for several PSP toxins, in particular saxitoxin and decarbamoyl-saxitoxin in lyophilized mussels, and to set criteria for the acceptance of results to be applied during the certification exercise. Fifteen laboratories participated in this certification study and were asked to measure saxitoxin and decarbamoyl-saxitoxin in rehydrated lyophilized mussel material and in a saxitoxin-enriched mussel material. The participants were allowed to use a method of their choice but with an extraction procedure to be strictly followed. The study included extra experiments to verify the detection limits for both saxitoxin and decarbamoyl-saxitoxin. Most participants (13 of 15) were able to meet all the criteria set for the certification study. Results for saxitoxin.2HCl yielded a certified mass fraction of <0.07 mg/kg in the rehydrated lyophilized mussels. Results obtained for decarbamoyl-saxitoxin.2HCl yielded a certified mass fraction of 1.59+/-0.20 mg/kg. The results for saxitoxin.2HCl in enriched blank mussel yielded a certified mass fraction of 0.48 +/- 0.06 mg/kg. These certified reference materials for paralytic shellfish poisoning toxins in lyophilized mussel material are the first available for laboratories to test their method for accuracy and performance.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the     

Chinese CTP Market

According to Printing and Printing Equipment Industries Association of China（PEIAC）＇s statistics to the plate manufucturer in China, in 2013, the actual offset plate production has reached 346 million square meters in China. Among them, the CTP production volume was 245 million square meters, up by 11% than that of last year; the total sales of the CTP plate was 239 million square meters, up by 13%.     

Preparatory Work of Print China 2015 is Going Smoothly

正Held at Guangdong Modern International Exhibition Center,Print China 2015 will cover 7exhibition halls,besides the original Hall No.3,4,5,6,7,the newly built F zone of Hall 3 will be used too.The total area will be140,000 square meters.Hall 3:Offset and large printing equipment,package printing equipment,post press     

INFOPRINT 2014 was Successfully Held in Dongguan

Sponsored by Printing and Printing Equipment Industries Association of China （PEIAC） and organized by Print China magazine, the Seventeenth Beijing International Printing Information Conference （INFOPRINT 2014） was successfully held on 11th Dec. 2014 at Dongguan Exhibition International Hotel.