福建省尤溪九阜山药用蕨类资源调查

对福建省尤溪县九阜山省级自然保护区的药用蕨类植物资源进行调查研究,结果表明:该区药用蕨类植物共有32科48属73种,种数在3种以上的科有鳞毛蕨科(7种)、水龙骨科(6种)、凤尾蕨科(6种)、卷柏科(5种)、石松科(4种)、碗蕨科(4种)、卷柏科(4种)、乌毛蕨科(3种)、金星蕨科(3种)、蹄盖蕨科(3种)。同时,列出了每种药用蕨类植物的中名、科名、学名、药用部位、药用功效、采收季节与采后处理方法,并对如何合理开发利用该区的药用蕨类植物资源提出了建议。     

福建长汀药用蕨类植物资源

对长汀县药用蕨类植物进行了调查,显示该地区共有药用蕨类植物121种和4变种,隶属于36科67属。分析了这些蕨类植物资源、区系特征、生活型和利用价值,并结合当地的实际情况提出了合理开发利用药用蕨类植物资源的建议。     

秋优桂99在广东化州试种表现及在海南乐东制种技术要点

秋优桂99是广西区农科院杂交水稻研究中心用优质不育系秋A与桂99配组育成的弱感光型杂交稻新组合，具有高产、稳产、抗病、优质等重要特性，2000年通过广西区农作物品种审定。1999年广东化州市引进试种获得成功。介绍了秋优桂99在广东化州试种的性状表现及其在海南乐东县制种的技术要点。     

杨梅花芽生理分化期叶片碳氮含量动态变化

以杨梅芽和叶片为试材,研究杨梅花芽生理分化期碳氮含量和碳氮比的变化。结果表明：杨梅花芽生理分化期叶片全碳和全氮含量先降后升,碳氮比则先升后降。花芽生理分化开始时碳氮比值增大,可以促进杨梅花芽分化。生理分化开始时全碳含量降低的幅度可以作为判断花芽分化率大小的一个指标,降低幅度大的花芽分化率高。     

甬优6号在浙江乐清种植表现、高产栽培技术及利用价值

介绍了杂交粳稻新组合甬优6号2003—2005年在浙江乐清市的试种示范表现,提出了该组合的主要高产栽培技术,并对其推广应用价值和前景进行了评价。     

东山岛马銮湾景区景观生态林改造探讨

通过对东山岛海滨风景区--马銮湾绿化现状分析,提出实施景观生态林改造的原则和方法,并对树种的引进选择和应用提出了建议,从而为海滨风景区生态林更新提供参考.     

安龙县德卧镇“金银花”质量分析与品种鉴别

为了解贵州省安龙县德卧镇“金银花”的质量状况,参照2010年版《中国药典》和2004年版《药用植物及制剂外经贸绿色行业标准》,检测了该地“金银花”样本的药用有效成分、重金属含量及有机氯类农药的残留量。检测结果：样本绿原酸含量2.5％,木犀草苷含量0.037％;Pb,Cd,As,Hg,Cu含量分别为0.32、0.18、0.21、0.15、6.4 mg／kg;不含有BHC、DDT、PCNB。结果表明：德卧镇“金银花”样本绿原酸、重金属及有害元素含量均符合《中国药典》的规定;重金属与农药残留量达到《药用植物及制剂外经贸绿色行业标准》;木犀草苷含量未达到《中国药典》规定的不得少于0.050％的最低指标。从外形和化学成分综合分析,该地栽培的“金银花”应为山银花。     

小春生物多样性优化种植控病增产试验

为充分比较大麦、蚕豆净栽,大麦+蚕豆的产量和效益,保山市农科所承担云南农业大学小春生物多样性优化种植同田对比试验.结果表明,大麦+蚕豆比净栽大麦每公顷增产265.8 kg,增3.96%,其中,大麦+蚕豆与净栽大麦相比,在同等面积下,每公顷可增收蚕豆600kg,能有效地控制病虫的危害.     

Growth,water use,and kernel abortion of maize subjected to drought at silking

Maize (Zea mays L.) grain yield is particularly sensitive to water deficits that coincide with the tasseling-silking period, causing marked reductions in grain number. More knowledge about crop responses to water supply is required, however, to explain the causes of kernel number reductions under the mild stresses characteristic of humid regions. The objectives of this study were to: (i) quantify crop evapotranspiration, E_c, and its relationship with shoot biomass production, grain yield, and kernel number; and (ii) determine the impact on final kernel number of supplying fresh pollen to silks whose appearance is delayed by water deficits at silking. Field experiments were conducted at Balcarce (37°45′S, 130 m) during 1988/89 and 1989/90 with two sowing dates (6 weeks apart) to provide differences in evaporative demand. Plastic covers were placed on the ground of water-deficit plots to generate a 40-day period of lowered water supply bracketing silking. Control plots received rain plus additional furrow irrigation in order to keep the ratio between crop (_c) and potential (E_p) Penman evapotranspiration greater than 0.9. Plant water status indicators revealed differences between treatments, but failed to reflect soil water status. Water deficit reduced plant height, maximum leaf area index, and shoot biomass. Shoot biomass accumulation was correlated with E_c, but higher water-use efficiencies (WUE) were found for the water-stress treatments. Grain yield was correlated to kernels m⁻² (r = 0.88; 6 d.f.), and both grain yield and kernels m⁻² were related to E_c during the treatment period, resulting in reductions of 4.7 grains m⁻² and 17.7 kg ha⁻¹ for each mm reduction in E_c. The number of kernels per ear did not improve when fresh pollen was applied to late appearing silks, suggesting that ovaries which failed to expose their silks synchronously with pollen shedding were deleteriously affected by water stress.     

Evapotranspiration,yield, and water-use efficiency responses of Lesquerella fendleri at different growth stages

Lesquerella fendleri (Gray) Wats. is a potential new oilseed crop for the arid southwestern United States. Lesquerella seed oil with similar properties as castor oil is being considered as a domestic replacement for the imported castor oil. Development of new crops with low irrigation needs is of high priority. Because the most critical stage of sensitivity to moisture deficits has not been determined in Lesquerella species, the objectives of this study were: (i) to identify the most critical stage or stages for moisture deficit and, (ii) to determine the effect of moisture deficit on yield, yield components, oil and fatty acid composition. Two-year field studies were conducted at the New Mexico State University, Leyendecker Plant Science Research Center. The experimental design was a randomized complete block. The treatments consisted of (a) T1: Continuous favorable soil moisture [irrigated at 50% soil water depletion (SWD)]. (b) T2: Moisture stress (75% SWD) from establishment to initial flowering with no stress from flowering to final harvest (50% SWD). (c) T3: No stress imposed from establishment to initial flowering (50% SWD) followed by stress to final harvest (75% SWD). (d) T4: Moisture stress (75% SWD) from establishment to final harvest. The amount of water applied ranged from 810 to 729 mm for the first year, and 810 to 625 mm for the second year. Seed weight per plant and number of pods per plant were generally higher when water availability was maintained at or above 50% SWD throughout the growing season. Neither seed number per pod nor seed size was influenced by irrigation treatments. Lesquerella was more sensitive to water availability during flowering and seed development as a greater loss in seed yield occurred when irrigation was delayed to 75% SWD during that stage of development. Seed yield and dry matter production from the 2 year field studies were closely related to the seasonal cumulative evapotranspiration. For each millimeter of evapotranspiration, seed yield increased from 1.8 kg ha⁻¹ mm in 1994–1995 to 1.3 kg ha⁻¹ mm for 1995–1996. The dry matter production increased 13.4 kg ha⁻¹ for each mm increase in seasonal evapotranspiration during 1994–1995. This relationship was a second order polynomial with an R² of 0.86 during 1995–1996. The WUE_gr and WUE_dm were highest under the most favorable water availability conditions for growth and seed development. Delaying irrigation to 75% SWD throughout the crop growth period resulted in the lowest oil content. Lesquerolic acid content was not affected by irrigation during both the growing seasons.     

新香优63在澄海的种植表现及栽培技术

介绍了优质杂交稻组合新香优63在澄海市的试验示范表现、配套技术及推广前景.     

热科院广州实验站热带能源生态研究

分析我国现代农业和热区特色农业发展概况，针对能源生态在我国热带农业的现代化进程中存在的问题和前景进行探讨，着重就热科院广州实验站在热带能源生态上近一年来所承担的科研任务和取得的科研成果进行分析，提出一系列的研究展望，拟在“科技创新和服务三农”的指导思路推动下，大力发展木薯和油棕两种主要能源作物，努力探索其北移适应性栽培及产业化进程，同时积极筹备能源植物种质资源圃的建立等相关工作，努力促进热带能源生态学科以及能源生态研究所的建设。     

浦城县双低油菜高产栽培综合技术探索

以当家品种福油2号为对照,对引进的华油杂13号等10个品种进行产量测定试验;以引进的丰油701为供试品种,进行了最佳播种期,合理密植度,最佳施肥方案进行对比实验,确定了适合浦城推广的油菜高产综合栽培技术措施。