全文获取类型
收费全文 | 604篇 |
免费 | 14篇 |
专业分类
林业 | 26篇 |
农学 | 47篇 |
基础科学 | 4篇 |
67篇 | |
综合类 | 14篇 |
农作物 | 25篇 |
水产渔业 | 9篇 |
畜牧兽医 | 399篇 |
园艺 | 8篇 |
植物保护 | 19篇 |
出版年
2023年 | 5篇 |
2022年 | 5篇 |
2021年 | 9篇 |
2020年 | 9篇 |
2019年 | 17篇 |
2018年 | 19篇 |
2017年 | 10篇 |
2016年 | 11篇 |
2015年 | 7篇 |
2014年 | 14篇 |
2013年 | 79篇 |
2012年 | 18篇 |
2011年 | 21篇 |
2010年 | 14篇 |
2009年 | 15篇 |
2008年 | 12篇 |
2007年 | 16篇 |
2006年 | 7篇 |
2005年 | 5篇 |
2004年 | 8篇 |
2003年 | 7篇 |
2002年 | 4篇 |
2001年 | 9篇 |
2000年 | 6篇 |
1999年 | 5篇 |
1998年 | 7篇 |
1997年 | 5篇 |
1996年 | 4篇 |
1995年 | 4篇 |
1994年 | 6篇 |
1993年 | 5篇 |
1989年 | 6篇 |
1988年 | 4篇 |
1976年 | 7篇 |
1968年 | 14篇 |
1966年 | 6篇 |
1964年 | 7篇 |
1963年 | 7篇 |
1960年 | 26篇 |
1959年 | 10篇 |
1957年 | 21篇 |
1956年 | 12篇 |
1955年 | 26篇 |
1954年 | 23篇 |
1944年 | 10篇 |
1943年 | 5篇 |
1942年 | 6篇 |
1941年 | 19篇 |
1940年 | 6篇 |
1927年 | 5篇 |
排序方式: 共有618条查询结果,搜索用时 15 毫秒
91.
92.
D.E. Gardner Ph.D. B.V.Sc. Dip.Microbiol. M.A.C.V.SC. D. Martinovich B.V.Sc. M.S. M.R.C.V.S. M.A.C.-V.Sc. Dip.Agric. D.A. Woodhouse A.I.M.L.T. 《New Zealand veterinary journal》2013,61(6):117-122
Sarcocysts morphologically similar to Sarcocystis muris were observed in the skeletal muscles of mice dosed with free isosporan sporocysts recovered from the faeces of naturally infected cats. Kittens fed these mice shed similar sporocysts measuring 8.7 ±0.1 x 10.8 ±0.1 μm in their faeces five to six days later. Feeding these sporocysts to mice and rats resulted in the formation of identical sarcocysts in mice, but not rats. Attempts to induce similar infections in mice using naturally acquired isolates of I. felis were unsuccessful. 相似文献
93.
94.
95.
96.
97.
Nirmala Sehrawat Mukesh Yadav Anil Kumar Sharma Vikas Kumar Kangila Venkataraman Bhat 《Archives of Agronomy and Soil Science》2019,65(9):1287-1301
Mungbean is an important food grain legume with high economic status. It has an excellent source of dietary protein and nutritional health benefits, particularly for the vegetarians. It increases soil fertility and also plays an imperative role in major cropping systems due to its short life span. Production of mungbean is still decreasing due to its susceptibility towards various environmental stress factors. Salt stress is one of the most prevailing abiotic stress imposing threats for agriculture food crops along with increasing world population and limited natural resources. Fewer efforts have been made to develop an improved variety of mungbean. The present review summarizes the adverse effects of salt stress and mungbean response at the physiological and molecular level. It covers recent studies on introgression of useful traits in mungbean for its better adaptability and survival under stressed conditions. Modern biotechnological approaches and traditional breeding methods may assist the development of salt-tolerant cultivars of mungbean for salinity-affected area in arid and semi-arid regions. Researchers involved in this area should keep this goal on priority for sustainable mungbean production. Availability of protein-rich food may help to reduce the problem of malnutrition in poor families and national food security issue for a continuous rising population. 相似文献
98.
99.
100.