Seafood Purchasing Preferences of Hawaii Chefs: Comparing Actual Purchase to Stated Preferences From Conjoint Choice Experiment

This study investigated if Hawaii chefs use wild seafood products over farm-raised and local over imports. Chefs were asked to estimate their purchases for shrimp, tuna, mahimahi, and salmon. Chefs were also asked to choose products within conjoint choice experiments to indirectly determine their preferences. Price is the most important attribute for shrimp. Hawaii chefs would prefer wild and farm-raised local, fresh shrimp if it were competitively priced over low-priced imported and frozen alternatives. This result can be useful for the shrimp aquaculture industry in Hawaii. The low importance of production method when purchasing seafood should be further explored.     

浅谈山西省杨树局种苗产业发展

文章分析了山西省杨树局面临的机遇和发展种苗产业的优势。提出了杨树局应抓住全社会重视生态建设的机遇,充分发挥实验局土地、人才、科技、资源、市场等优势,根据各林场的立地条件,分区经营,打造龙头企业,带动多种形式,大力发展种苗产业。     

大兴安岭野生浆果资源利用状况及产业化发展对策

大兴安岭地区有30余种野生浆果,种类组成独特、单纯,质量好,储存量大,分布集中,易于采收;分析了大兴安岭地区野生浆果资源的总体情况和当前利用状况及存在的问题,提出了充分利用资源的思路和对策。     

缬草繁殖生物学研究

介绍缬草的两种繁殖方式及其开花、结实、采种等物候学特性,并针对缬草种子休眠,做了种子萌发试验,结果表明:采用变温处理,可使黑水缬草缬草种子萌发率达到86.6%。     

泰山的野生观赏植物资源调查

按一般的观赏植物分类体系将泰山的观赏植物资源分为古树名末,观花乔木和灌木,野生草本花齐、秋季观叶观果植物、常绿观赏植物,藤本植物,珍稀物人七厌烦,并对合理保护,开发观赏植物资源提出了几点建议。     

重金属镉污染对玉米种子萌发及幼苗生长的影响

研究不同浓度镉(Cd2 )胁迫对玉米萌发及幼苗生长影响,结果表明,当Cd2 浓度为5￣15mg/L时,Cd2 可以促进玉米种子的萌发,提高玉米的发芽势和发芽率,促进玉米芽与幼根的生长;当Cd2 的浓度高于50mg/L时,明显抑制种子萌发和幼苗生长。     

Information Barriers to Adoption of Agricultural Technologies: Willingness to Pay for Certified Seed of an Open Pollinated Maize Variety in Northern Uganda

We examine smallholder farmers’ willingness to pay for agricultural technology and whether information is a constraint to adoption of certified maize seed in Northern Uganda. The uptake of improved maize varieties by smallholder farmers in Uganda remains persistently low, despite the higher yield potential compared to traditional varieties. A recently growing body of literature identifies information constraints as a potential barrier to adoption of agricultural technologies. We used incentive compatible Becker‐DeGroot‐Marschak auctions to elicit willingness to pay for quality assured improved maize seed by 1,009 smallholder farmers, and conducted a randomised evaluation to test the effect of an information intervention on farmers’ knowledge of seed certification. Our results show that the randomised information treatment enhanced farmers’ knowledge of certified seed. However, using the information treatment as an instrumental variable for knowledge, we find no evidence of a causal effect of knowledge on willingness to pay, suggesting that even though farmers are information constrained, this constraint does not affect adoption of certified seed directly. Nevertheless, only 14% of sampled farmers were willing to pay the market price, which corresponds closely with actual observed demand for certified seed in the previous season. This suggests that there are other barriers to adoption than information and awareness.     

崂山的野生木本花卉及其开发利用

对青岛崂山的部分野生木本花卉的生物学特性、生态分布和开发利用进行了详细研究,从而提出了合理的开发利用途径。     

西藏野生食用菌资源

报道了西藏48种野生用菌的生态地理分布情况,以期为西藏野生自然资源的开发利用提供可靠翔实的依据。     

Dimensions of hunting satisfaction: Multiple‐satisfactions of wild turkey hunting

Abstract

Dimensions of hunting satisfaction were studied among a sample of hunters who received permits to hunt wild turkeys in Michigan. Principal components analysis revealed seven dimensions of turkey hunting satisfaction: preparation, search, harvest, nature, out‐group social, companionship, and season. Although some components of turkey hunting satisfaction were similar to those studied previously for deer hunters, components found in this study to be important to turkey hunters’ satisfaction point to the importance of studying hunting groups of diverse species in order to understand more fully the satisfactions people derive from hunting.