1988(3).
Abstract:In the regions of yellow brown earth, where the soil mainly lack ofphosphorous and nitrogen, the status of nutrients equilibration is NP>NPK>NK. Whenwheat nutrients are equilibrated, the fertilizer efficiency of ammonium chloride is about thesame as ammon
Liu Dingfu , Zhou Yongming , Liu Houli ,
1988(3).
Abstract:本研究从中国高芥酸甘蓝型油菜品种华油8号与加拿大无芥酸品种Altex杂交的后代中,分离和鉴定出了两种不同的纯合中芥酸基因型,它们在一个基因座位上具有纯合的有芥酸基因E.在另一座位上具有纯合的无芥酸基因c,其基因型组成可分别用E_AE_Ae_Ce_C和e_Ae_AE_CE_C表示。二者的芥酸含量均为27%左右,基本上等于双亲的平均值。这两种基因型的杂交后代和回交后代的分离结果表明,其遗传行为与无芥酸和高芥酸杂交后代的结果相同,这再次证实了芥酸的遗传假说,同时也证实了这两种基因型的遗传组成。文后讨论了这两种基因型的可能用途。
Zhang Xianlong , Liu Jinlan , Sun Jizhong ,
1988(3).
Abstract:离体培养陆地棉与亚洲棉杂种胚珠,并以陆地棉自交为对照。观察结果表明,杂种胚胎表现出明显的生长优势,能顺利地通过胚胎发育的各个时期而达成熟胚。其原因是,胚乳游离核迅速解体,珠心组织也随之解体,而不形成胚乳细胞并使胚囊腔迅速扩展,使杂种胚有足够的营养源,并提供了足够的生长空间。自交胚胎的生育速度远不及杂种胚,发育受抑,尤其是球形胚到心形胚的时期较长。
1988(3).
Abstract:This paper reports the methods to simulate the daily variations of directsolar radiation, diffuse solar radiation and air temperature based on normalmeteorological data. These methods are designed for use as numerical models ofpotential productivity.
1988(3).
Abstract:Two-month old GFR strain angora rabbits were divided into two groupswith 60 in each. These rabbits were bred with the feed containing high fibre and lowenergy (experimental group) or high energy and low fibre (control group) until 5-monthold. The results
Su Xiong , Chan Yuchuan , Jin Meilin ,
1988(3).
Abstract:用根癌土壤杆菌(Agrobacterium tumefaciens,At)酶的粗提取物加入到培养猪痢疾密螺旋体(Treponema hyodysenteriae,Th)的培养基中后接种Th(H_(10)菌株)在CO_2:H_220: 80的环境中,37℃培养5天后,收获并制备Th抗原。这种抗原在微量凝集试验(microtitr-ation agglutination test, MAT)中能防止自凝现象。用这种Th H_(10)抗原检测了92头猪痢疾的血清和6头高免兔血清[其中用5株Th,1株无害螺旋体(Ti)高免)。结果表明Th与Ti高免血清之间有一定的交叉反应,但滴度是有显著区别的。48头SPF猪血清的效价均在64倍以下;而92头猪痢疾痢猪血清的抗体含量在128-2048倍之间,其中仅有一头猪的滴度为64倍,因此该法可用于猪痢疾病猪群的诊断。
Pan Zhaohui , Yu Yanhu ,
1988(3).
Abstract:The experiment was conducted with 172 Star Cross-288 strain pullets whichwere randomly divided into four groups. From 4 to 24 weeks old, the birds in the fourgroups drank the water containing 0.16, 100, 200, and 300ppm of fluoride respectively.At the age
Pan qiansheng , Fang Zhiping ,
1988(3).
Abstract:Gastrin-immunoreactive cells were identified in the intestinal tract ofcommon carp (Cyprinus carpio), grass carp (Ctenopharyngodon idellus), black carp(Mylopharyngodon piceus), and whitefish (Erythroculter ilishaeformis) by theimmunohistochemical staining
Cao Xiangyun , Liu Wuding , Pi Meimei ,
1988(3).
Abstract:The experiment was conducted under soil culture to study the effects ofB-deficiency and B-toxicity on anatomical structure of cotton leaves. Microscopicobservations revealed that vein vascular bundle of B-deficient leaves was obviouslyenlarged transportiv
Liu Tongchou , Deng Boer , Yang Zhuging , Fun Jinan ,
1988(3).
Abstract:Aresearch was conducted to establish the standard of the amount oftrivalent chromium in calcium magnesium phophate fertitizer made of chromic residue asit was applicated to acid soil. Rice, wheat and Chinese Cabbage were used as indicatorplants. The resul
Zong Liangbing , Zhong Changzhen , Lei Chaoliang ,
1988(3).
Abstract:ABSTRACT: The distribution of 9 species of Trichogramma on different habitats wasinvestigated from 1982 to 1985 in Hubei province. Relationships between Trichogrammaand plant habitats were analyed. From surveying species of pest eggs on 49 species ofplant
Xu Guanjun , Zeng Xianshun , Zhang Guo''''an , Jian Guozheng , Yang Puyun ,
1988(3).
Abstract:The Amur silvergrass stem borer, Chilo hyrax Bleszyski, is one of themost serious pest infesting the Amur sil ergrass, Miscanthus sacchariflous (Maxin) andCommon reed, Phragmiles commuis Trin in Hubei province. It has two to threegenerations per year. The
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