Correlation between Chemical Structure and Biological Activity of Host-Selective Plant Pathogen Mycotoxins

Toxin, one of the most important factors of plant fungal disease, has attracted much attention of many academicians who have been studying pathogen mycotoxin in deep research. The paper summarized chemical structures of some host-selective plant pathogen mycotoxins discovered in recent years and the correlation between biological activity and chemical structure of toxin.     

消毒剂在规模化养殖场中的应用

主要介绍了养殖场常用消毒剂的特点、种类、影响因素、消毒环节应用及注意事项,旨在确保畜禽养殖场在准确消毒后畜禽免遭有害病菌侵袭,提高养殖经济效益。     

Review on Thermal Characteristics of Compound Outdoor Wall of Wood Framed Construction

INTRODUCTION China has a long history of wood framed construction. But, due to the increasing of population and lack of timber, wood framed construction is limited in the market, its research and development is relatively scarce. The modern wood framed construction has been developed and widely applied in the North American area and other countries for several decades. Recently, with the rapid development of economy and the requirement of society, especially energy saving, the wood frame…     

Effects of Metal Ions and EDTA on Free Radical Reaction Intermediates of Laccase-catalyzed Oxidation of Wood Powder from Szemao Pine

INTRODUCTIONLaccase (EC 1.10.3.2) is multicopper oxidase catalyzing oxidation of various phenolic compounds, aromatic amines, and even certain inorganic compounds by a one-electron transfer mechanism. The electron withdrawn from the substrates is transferred via four copper atoms to molecular oxygen (Messerschmidt 1997). Laccase is very common in nature, especially in plants and fungi (Gianfreda et al. 1999). Fungal laccases participate in plant pathogenesis, pigment production and ligni…     

小鹅瘟的防治技术

以湖北省襄阳市周边养殖场为例,介绍了小鹅瘟的流行病学、临床症状、防治及预防措施。     

杂交中稻Q优1号试种表现及栽培要点

杂交中稻Q优1号(115A×绵恢725)在江淮之间大面积试种,平均每公顷单产9.11吨,米质达部颁二级优质标准,抗逆性较强.栽培上应适时播种,宽窄行栽植,科学管理水肥,及时防治病虫害.     

涪优三号的特征特性及高产栽培技术

"涪优三号"是四川省著名油菜育种家罗三培育成的丰产潜力大,亩产可达300千克,含油量42.7%的甘蓝型核不育两系优质杂交油菜新品种. 该杂交油菜良种2002年审定后引入安徽省,进入安徽省区试.2004～2005年度在肥东县种子管理站农科所进行了示范:该品种株型适中,熟期中等,每角粒数21.3粒,千粒重3.8克,排第一位,综合表现十分突出.经三年万亩以上较大面积的试验、示范观察总结得出,涪优三号有如下几个重要特点:     

Experimental Study on Sawing Characteristics of Planted Eucalyptus grandis

INTRODUCTION Eucalyptus plantations have been important plantations in South China for its fast-growth rate. And the overall planted area is beyond 1.6 million ha, mainly distributed in the provinces of Guangdong, Guangxi, Yunnan, Fujian, etc. But, the main utilization is limited to wood chips currently. Along with the natural forest protection policy implementation, the wood resource has transferred from the natural forest to plantation forests, and the value-added application of plant…     

嫁接茄子春拱棚栽培关键技术

茄子嫁接栽培是茄子防病高产的重要措施,但必须解决砧木种子出苗难、易发生药害及育苗期病虫害发生严重问题;掌握好适宜的嫁接时期;加强定植后的管理,促返苗,防徒长,防裂果。