黄蝉属植物研究现状及其园林应用

黄蝉属(Allamanda L.)植物是重要的观赏植物。综述了黄蝉属植物种质资源及其系统学、生理生态特性、药理作用、杀虫活性和栽培繁殖等方面的研究现状，归纳总结该属植物在园林中的配置应用情况，并对该属植物今后的研究方向进行展望。     

不同叶面肥对狐臭柴叶片生物量和主要生化指标的影响

以三年生狐臭柴为实验材料,设置自然光和遮光两种光照条件,用三种叶面肥进行喷施,分析不同肥料对狐臭柴叶片生物量和主要生化指标的影响。结果表明:喷施氮肥能显著提高狐臭柴叶片生物量,自然光及遮光下分别增加37.30%和15.02%,但果胶的积累减少,分别降低19.78%和17.35%;磷肥能显著提升叶片果胶的含量,分别增加158.08%和239.96%,但叶片生物量显著低于对照,分别降低55.83%和47.40%;复合肥对叶片生物量无明显影响,果胶含量轻微降低。各肥料均使可溶性糖含量降低,且在遮光条件下使叶片内可溶性蛋白含量增加,自然光下使可溶性蛋白含量降低。     

《园林设计初步》课程教学探析

《园林设计初步》是园林专业的基础课。针对目前《园林设计初步》教学存在的问题，结合《园林设计初步》课程定位及特点，围绕制图基础、设计基础及设计入门三大教学内容，从理论教学和实训教学两个方面，提出当前形势下《园林设计初步》教学内容安排及教学方法，以期提高教学效果。     

云南万峰山自然保护区独特的地貌景观价值及旅游开发

在复杂的岩石、构造及诸多自然条件的综合作用下,形成了云南万峰山自然保护区非常独特的岩溶地貌景观,其具有极高的观赏价值和旅游开发价值,为更好地实施保护、恢复与重建岩溶地区的生态环境,在保护区的实验区内及其周边,利用多姿多彩的自然景观和人文景观,进行适度的开发,从而达到保护自然、促进经济、社会发展的目的,并提出了一些旅游开发的设想。     

成都市典型农家乐植物组成特征研究

本文在成都市北湖公园、农科村、三圣乡选取了60个成都市典型农家乐,对植物群落进行了调查和分析。结果表明:成都市典型农家乐植物群落中应用的乔木种类有56种,灌木种类83种,草本种类有118种,共计257种,分属91科184属。在植物种类组成方面,成都北湖公园的乔木种类所占比例最高,达到22.39%;郫县农科村的灌木种类所占的比例是最高的,达到36.55%;而三圣乡"五朵金花"的草本种类所占的比例最高,达到47.92%。农科村主要树木的平均胸径为13.32±9.07?,平均高度为5.53±2.49 m,在3个地方中均为最高。群落外貌方面,三圣乡"五朵金花"和郫县农科村农家乐以常绿阔叶和落叶阔叶的混交林为主,针叶林少。成都北湖公园则以常绿阔叶为主,落叶和针叶林少。60个农家乐平均配置乔木5.1±2.47(N=60)种,平均配置灌木8.77±3.41(N=60)种,平均拥有草本11.83±6.75(N=60)种,超过50%的植物种类为三地或两地共有,植物配置呈现明显的相似性。     

发动机缸盖用铸造铝硅合金的成分优化与组织性能研究

采用正交试验对ZL101合金进行了成分优化设计，并分析了合金元素对铝硅合金力学性能的影响.对改良后的合金进行了热处理工艺研究，其最佳热处理工艺条件为：500 ℃×5.5 h+180 ℃×5 h.研究结果表明，改良合金在铸态下的力学性能为：抗拉强度为244.57 MPa，伸长率为5.95%，硬度为75.1 HB；在T6态下的力学性能为：抗拉强度为397.92 MPa，伸长率为4.68%，硬度为141.2 HB.     

Nutritional approaches to slow late finishing pig growth: implications on carcass composition and pork quality

Although pork producers typically aim to optimize growth rates, occasionally it is necessary to slow growth, such as when harvest facility capacity is limited. In finishing pigs, numerous dietary strategies can be used to slow growth so pigs are at optimal slaughter body weights when harvest facility capacity and/or access is restored. However, the impact of these diets on pork carcass quality is largely unknown. Thus, this study aimed to evaluate the efficacy of dietary strategies to slow growth in late finishing pigs and evaluate their effects on carcass composition and pork quality. Mixed-sex pigs (n = 897; 125 ± 2 kg BW) were randomly allotted across 48 pens and assigned to 1 of 6 dietary treatments (n = 8 pens/treatment): (1) Control diet representative of a typical finisher diet (CON); (2) diet containing 3% calcium chloride (CaCl₂); (3) diet containing 97% corn and no soybean meal (Corn); (4) diet deficient in isoleucine (LowIle); (5) diet containing 15% neutral detergent fiber (NDF) from soybean hulls (15% NDF); and (6) diet containing 20% NDF from soybean hulls (20% NDF). Over 42 d, pen body weights and feed disappearance were collected. Pigs were harvested in 3 groups (14, 28, and 42 d on feed) and carcass data collected. From the harvest group, 1 loin was collected from 120 randomly selected carcasses (20 loins/treatment) to evaluate pork quality traits. Overall, ADG was reduced in CaCl₂, Corn, and 20% NDF pigs compared with CON pigs (P < 0.001). However, ADFI was only reduced in CaCl₂ and 20% NDF pigs compared with CON (P < 0.001). Feed efficiency was reduced in CaCl₂ and Corn pigs compared with CON (P < 0.001). Hot carcass weights were reduced in CaCl₂ pigs at all harvest dates (P < 0.001) and were reduced in Corn and 20% NDF pigs at days 28 and 42 compared with CON pigs (P < 0.001). In general, CaCl₂ and 20% NDF diets resulted in leaner carcasses, whereas the Corn diet increased backfat by 42 d on test (P < 0.05). Loin pH was reduced and star probe increased in CaCl₂ pigs compared with CON pigs (P < 0.05); no treatments differed from CON pigs regarding drip loss, cook loss, color, firmness, or marbling (P ≥ 0.117). Overall, these data indicate that several dietary strategies can slow finishing pig growth without evidence of behavioral vices. However, changes to carcass composition and quality were also observed, indicating quality should be taken into consideration when choosing diets to slow growth.     

A review of okara (soybean curd residue) utilization as animal feed: Nutritive value and animal performance aspects

Year by year, huge quantities of by-products are generated during the manufacturing process of soybean-based products. Okara is one of the by-products, and it is an insoluble portion of the soybean. It consists of high moisture (8.4–22.9%); on dry matter basis, it contains high metabolizable energy (9.0–14.2 MJ/kg) and other components that include crude protein (20.9–39.1%), crude fiber (12.2–61.3%), crude fat (4.9–21.5%), and ash (3.4–5.3%). Fermentation of okara improves its nutritional quality and reduces its anti-nutrient contents. Due to animals' palatability, okara can be used to replace the soybean meal/concentrate feed partially or completely in ruminant's diet and partially in nonruminant's diet. Okara feeding does not depress the intake, digestibility, growth, milk production, blood metabolic profiles, and meat quality of animals. However, this by-product decays quickly due to its high moisture content, and its heavy weight and sticky nature make it difficult to process and expensive to dry using conventional methods. This paper thoroughly summarizes the utilization of okara as animal feed in the cause of developing a general guideline with favorable levels of inclusion in the diets of animals for its exploitation and valorization. This review will encourage further research to develop eco-friendly and value added feed for animals.     

制种玉米密度对土壤水分及产量构成的影响研究

通过田间试验,就制种玉米密度对土壤水分、农艺性状、产量构成及产量的影响进行了研究分析。结果表明:1在拔节期以前,低密组的土壤含水量比高密组的高;在拔节期到灌浆期,高密组的比低密组的高。在整个生育期,拔节期前土壤含水量比较高,而后逐渐降低,吐丝期达到最低,然后又逐步上升。2在一定密度范围内,制种玉米株高、亩产量随着密度的增大而增加单株产量产量相反;叶长、穗粗、穗粒数先随着密度的增大而减小,后随着密度的增大而增大;叶宽、穗长、百粒重、出籽率先随着密度的增大而增加,后随着密度的增大而减小;叶面积、茎粗、穗位先随着密度的增大而减小,后随着密度的增大而增加,然后又随着密度的增大而减小,秃顶变化规律相反。     

上海松江中心城区道路绿化类型及景观分析

将松江中心城区道路绿化的配置形式归纳为14个类型,并对各类型的绿化景观效果进行了分析。