优质高产棉花杂交种中棉所101

简要介绍了中棉所101的选育过程、特征特性以及高效栽培技术要点。     

森林资源二类续档误差及原因分析

针对当前森林资源数据二类续档存在的问题,在对永安市大坑采育场大坑工区进行小班实地调查的基础上,以2003年初二类调查小班主要调查因子数据与1996年二类调查续档至2002年底数据进行对比,分析其误差及产生原因,并提出相关建议。     

Benzophenone glycosides and epicatechin derivatives from Malania oleifera

A new benzophenone C-glycoside, malaferin A (1), and two new epicatechin derivatives, malaferin B (2) and malaferin C (3), together with five known compounds were isolated from Malania oleifera. In addition, (-)-epicatechin-3-O-benzoate (6) was isolated for the first time from a natural resource. Structures of 1-3 were determined on the basis of their spectroscopic methods, including 1D and 2D NMR techniques. All of the compounds were evaluated for anti-HIV activities.     

几种班克木属植物种子生物学特性及其育苗技术研究

3种班克木属树种的种子生物学特性测定结果表明,种子的种间特征差异较大,吸水能力均较强,全缘班克木、剑班克木和生日蜡烛班克木种子50 d的发芽率分别为71.2％、32.8％和33.5％.播种育苗试验结果显示,4个班克木属树种苗期生长出现根茎纤弱、怕水渍和生长缓慢的特性;而基质通过添加石灰和微量元素可显著促进索发针班克木小苗的生长,要培育壮苗必须控制育苗基质呈弱酸性至中性状态,同时苗床要干爽.     

滇西保山地区的假松茸产量与生境关系研究

确定了云南省保山地区松茸的分类地位,系与松茸同属不同种的Ｔｒｉｃｈｏｌｏｍａ ｂａｋａ－ｍａｔ－ｓｕｔａｋｅ,俗称假松茸或青冈松茸;研究了它的周年发生规律及产量分布状况。７月中旬为松茸始发期,８月下旬为子实体发生的高峰,１０月下旬基本结束;以８月上旬至９月上旬为主产期,其产量占全年产量的６９．９％。此外还探讨了假松茸发生的生态条件,以及松茸可持续发展研究的初步结果。     

Distribution and migration of Japanese common squid, Todarodes pacificus, in the southwestern part of the East (Japan) Sea

Data on squid catches of Korean and Japan, water temperatures at depth of 100 m, and night-visible images of fishing boats collected in the East (Japan) Sea from 1970 to 1999 were analyzed to examine the distribution and migration of the Japanese common squid, Todarodes pacificus, in the southwestern part of the East (Japan) Sea. The main fishing grounds detected from squid catch in each grid (0.5° latitude × 0.5° longitude) by Korean squid fishery and night-visible images provided by the Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS) were situated in the southwestern part of the East (Japan) Sea. The distribution and migration route was illustrated from squid catch in each grid and DMSP OLS image. In years of high catches, the fishing grounds were situated mainly between Ulleung Island and the eastern coastal waters of Korea, while in years of low catches they were situated between Ulleung Island and the Yamato Bank in the central East (Japan) Sea. The center of fishing activity began moving northward from around the Korea/Tsushima strait to the northern boundary of the Tsushima Warm Current in March, reaching into the Yamato Bank in September, and then returning to the strait by February. The northward and southward migration routes differed; the northward migration route occurred closer to the mainland coast of Korea than the southward migration route did. This work suggests T. pacificus begin their northward migration almost 2 months earlier than previously suggested.     

不同植物配置模式对人工边坡减流减沙效益的影响

[目的] 探讨不同植物模式（混草、花草、灌草、乔草）及配置比例对生产建设项目人工边坡水土流失的影响,为人工边坡植被恢复提供参考。[方法] 采用径流小区定位观测法,记录2019年1—12月自然降雨,研究4种植物模式的产流产沙特点,揭示4种植物模式的减流减沙效益。[结果] ①观测期内总降雨量为1 052.73 mm,总降雨历时为845.1 h,7月降雨量最大,2月降雨历时最长,降雨集中在1—7月,以中雨、大雨、暴雨为主。②每场降雨产流差异大,产流月季差异大,集中在2—4月及7月,多发生在中雨、大雨和暴雨情况。③每场降雨及月、季降雨之间产沙差异大,3月产沙最大,产沙集中在2—4月及7月,多发生中雨、大雨和暴雨。④以花草模式为对照,每场降雨条件下灌草模式的减流率最大,乔草模式的减沙率最大,月降雨累计条件下,混草模式减流率最大,乔草模式减沙率最大,不同降雨等级累积和全年累积条件下,乔草模式的减流减沙率最大。[结论] 植被恢复初期,受植被覆盖度差异影响,乔草模式、混草模式的减流减沙率较大,具有较好的固土保持效益。     

“太湖1号”杂交青虾规模化繁育技术研究

利用53hm2标准化鱼池,采用雌雄亲虾同池的放养模式与集中投放抱卵虾孵化培育模式2种模式进行“太湖1号”杂交青虾的规模化繁殖试验。结果显示,本期共繁殖生产虾苗33533．86万尾,31878．33kg。雌雄亲虾同池培育的产苗量比集中投放抱卵青虾培育的产苗量要低36．49～69．26kg／hm2,或132．85万。143．607万尾／hm2,苗种规格大小差异大。雌雄亲虾同池培育的捕苗时间从7月18日到8月25日,共计38d,集中投放抱卵亲虾培育池的苗规格较一致,捕苗时间为期25d,捕捞时间缩短了13d。这表明,集中投放抱卵虾孵化培育模式可作为青虾规模化繁殖生产的优选方式。     

NO3--N/NH4+-N配比对小白菜生长及硝酸盐含量的影响

利用NO3^--N/NH4^＋-N不同配比的营养液对11个小白菜品种进行水培试验。结果表明,不同的NO3^--N/NH4^＋-N配比对不同品种小白菜生长和的硝酸盐含量有着显著的影响,同一氮源培养下不同的小白菜品种间表现出显著的差异,在5.0∶5.0（B）处理条件下,各品种小白菜表现良好;供试的小白菜品种的硝酸盐积累量随着铵态氮比例的增加而下降,表明适当地配施铵态氮较纯硝态氮营养液培养小白菜能获得较低的硝酸盐积累量,但不影响生长。     

微波无极紫外光助Fenton处理农药废水

研究了微波无极紫外(MWEUV)光助Fenton法对有机农药废水的强化降解作用,比较了单独MW、单独Fenton、紫外汞灯光助Fenton(UV/Fenton)和MWEUV光助Fenton(MWEUV/Fenton)4种体系的处理效果,考察了初始pH、H2O2投加量和Fe2+投加量对COD降解率的影响。结果表明,MWEUV比紫外汞灯具有更高的强化降解作用。在H2O2投加量为60 mmol/L,Fe2+投加量为0.5 mmol/L,初始pH为2~5的条件下,有机农药废水可被完全降解。