红耳(Auricularia rhodo judae)的生物学特性

红耳(Auricularia rhodojudae)的子实体呈深红色,质地柔软,背面绒毛短而稀疏,横切面中部结构的大多数菌丝与表面平行排列成髓层.抗逆性强.其菌丝酯酶同工酶的谱迁移率与毛木耳的毛耳台,7811,毛207等菌号不同.菌丝生长适宜环境为温度25—28℃,pH4,培养基含水量65—75%.子实体生长发育适温18—22℃.生物学效率96—110%.     

菜粉蝶颗粒体病毒及其应用的研究

菜粉蝶[Artogeia rapae(Linn.)]历来是十字花科蔬菜的重要害虫。过去由于单纯依赖化学药剂防治,而且能大量供应且适用于蔬菜的药剂品种极少,在大城市近郊老菜区的菜青虫对敌百虫、敌敌畏等常用农药的抗性越来越强。因而,如何形成一套合理的协调治理方案是亟待解决的问题。颗粒体病毒(GV)属于无脊椎动物杆状病毒属(Baculovirus)。由于病毒粒子外包     

施氮对油菜硫、硼、钼和硒营养的影响

研究了不同氮水平与杂交油菜收获期植株各器官硫、硼、钼和硒等元素含量和积累的关系。植株各器官（种子除外）的硫以及种子和主茎中的硼含量随施氮量的增加呈先升后降的趋势，但植株各器官的钼、硒和种子的硫以及其余各器官的硼含量随施氮量的增加有所下降。种子和主茎的硫以及果壳的钼、硼和硒的含量及积累量较高。     

青枯菌潜伏浸染对花生的影响

用青枯菌对20个花生品种进行人工接种，研究了青枯菌潜伏侵染对花生根系、根瘤数、生物产量及结实性状的影响。结果表明，青枯菌潜伏侵染对花生生长发育有普遍的抑制作用，不同花生品种对潜伏浸染的反应存在广泛差异。     

杂交水稻专家罗孝和获湖南省科学技术杰出贡献奖

2005年12月7日，经湖南省科学技术奖励评审委员会评审、省科学技术奖励委员会审定、省人民政府批准，中国工程院院士卢锡城和国家杂交水稻工程技术研究中心研究员罗孝和被授予2005年度湖南省科学技术杰出贡献奖。     

清蒸蟹肉罐头的生产工艺技术

本文叙述了清蒸蟹肉罐头的生产工艺流程及其操作要点,其主要特点是采用二次煮熟法及浸泡柠檬酸、EDTA混合溶液,调整 pH6.4,从而达到防止蟹肉罐头的蓝变。     

Polyphosphorylated L-ascorbic Acid: A Stable Form of Vitamin C for Aquaculture Feeds

A protected form of vitamin C, L-ascorbyl-2-poly phosphate (APP), was tested for safety and efficacy in fishes. Phosphorylation of the 2-hydroxyl group protected the 2,3-enediol of L-ascorbic acid against oxidation. When APP was added to feed, about 15% of its vitamin C activity was lost during milling and storing 5–7 d at ambient temperature. Stability of APP in pelleted feeds at 25 or 40 C was up to 83 times or 45 times greater than that of ascorbic acid (AA), respectively. In later tests, trout feed mash, steam-pelleted in triplicate, frozen, and shipped on dry ice before analysis, had 46% loss of AA and no apparent loss of APP. With 16% milling loss (highest detected in trout feeds assayed in initial tests) and 22% storage loss after 90 d, conservative APP mix rates were estimated. Mixing 153 g L-ascorbate-equivalent as APP per metric ton of airdry ingredients (153 ppm) would give 128 ppm in the finished feed after steam-pelleting and 100 ppm after 60–90 d storage at 40 C. Low-temperature extrusion of Oregon-Moist salmon feed reduced AA slightly. Ascorbic acid oxidized in frozen storage and while thawing and, after 12 h at room temperature, only trace amounts remained. Ascorbyl-2-polyphosphate at 0.05 to 0.2 times that of equimolar AA in casein-base or practical feeds supported long-term growth and development in rainbow trout and other fishes. Trout feeding trials with practical feeds in actual production regimens documented APP activity at growth rates approaching the maximum for trout farming. Corrected for greater stability, APP antiscorbutic activity appeared to be comparable to that of AA on a molar-equivalent basis. Similarly, apparent equimolar activity was inferred from estimated equilibrium levels of liver, kidney, and whole-body AA and L-ascorbyl-2-sulfate (AS) after prolonged APP use in trout feeds. Fathead minnow growth and reproduction in egg-to-egg life-cycle tests also confirmed APP safety and efficacy as a stabilized source of vitamin C for feeds. None of the typical lesions of scoliosis, malformed gill lamellae, and crenulated opercles, nor conditions of poor health, anorexia, and eventual torpor seen in vitamin C-deficient controls occurred in trout fed APP. No liver pathology was evident in trout fed APP for 252 d at 1.7 to 3.3 times the National Research Council's recommended vitamin C (equivalent) rates.     

浅析外来生物入侵与林业外来有害生物防控

本文通过对外来生物入侵的危害、机制和途径的论述,从江西主要林业外来生物入侵现状分析入手,并结合森林健康理论,提出了林业对外来有害生物防控的对策.     

香根草复合农林技术的应用探讨

分析了利用香根草独特的生物学特性,结合农林果业技术在龙胜县山区坡地、荒废地复合种植香根草绿篱、果树,建设灌溉系统,以扶助山区少数民族农民发展经济,减少水土流失,保护生态环境。探讨了香根草叶片手工艺品编织技术。     

两收敛且等值的无界函数广义积分变量代换的存在性与唯一性

本文讨论两个收敛且等值的无界函数广义积分变量代换的存在与唯一性，文中提出并证明了在一定的条件下，这个代换是存在的，也是唯一的。