全文获取类型
收费全文 | 264篇 |
免费 | 17篇 |
国内免费 | 1篇 |
专业分类
林业 | 12篇 |
农学 | 5篇 |
78篇 | |
综合类 | 21篇 |
农作物 | 16篇 |
水产渔业 | 19篇 |
畜牧兽医 | 112篇 |
园艺 | 6篇 |
植物保护 | 13篇 |
出版年
2024年 | 2篇 |
2023年 | 2篇 |
2022年 | 4篇 |
2021年 | 6篇 |
2020年 | 9篇 |
2019年 | 14篇 |
2018年 | 14篇 |
2017年 | 8篇 |
2016年 | 10篇 |
2015年 | 7篇 |
2014年 | 22篇 |
2013年 | 15篇 |
2012年 | 12篇 |
2011年 | 24篇 |
2010年 | 12篇 |
2009年 | 14篇 |
2008年 | 17篇 |
2007年 | 14篇 |
2006年 | 9篇 |
2005年 | 11篇 |
2004年 | 8篇 |
2003年 | 16篇 |
2002年 | 8篇 |
2001年 | 1篇 |
2000年 | 3篇 |
1999年 | 1篇 |
1996年 | 2篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1983年 | 1篇 |
1981年 | 1篇 |
1977年 | 1篇 |
1972年 | 2篇 |
1971年 | 1篇 |
1965年 | 1篇 |
排序方式: 共有282条查询结果,搜索用时 15 毫秒
281.
Debasis MITRA Sergio DE LOS SANTOS-VILLALOBOS Fannie Isela PARRA-COTA Ana Mara Garcia MONTELONGO Erika Lorena BLANCO Vanessa L. LIRA Adeyemi N. OLATUNBOSUN Bahman KHOSHRU Rittick MONDAL Parameswaran CHIDAMBARANATHAN Periyasamy PANNEERSELVAM Pradeep K. DAS MOHAPATRA 《土壤圈》2023,33(2):268-286
Various microorganisms live in association with different parts of plants and can be harmful, neutral, or beneficial to plant health. Some microbial inhabitants of plants can control plant diseases by contesting with, predating on, or antagonizing plant pathogens and by inducing systems for plant defense. A range of methods, including plant growth-promoting microorganisms(PGPMs) as biological control agents(BCAs)(BCA-PGPMs) are used for the biological management and control of plant pathogens. S... 相似文献
282.
Gustavo J. Macchi Marcelo Pjaro María I. Militelli Natalia Radovani Lorena Rivas 《Fisheries Research》2006,80(2-3):345-349
Effects of maternal age–size and condition on oocyte dry weight were analysed for Merluccius hubbsi. Samples of mature females were collected in the Patagonian spawning area during 10 research surveys carried out between 2000 and 2005. Dry weight of 50 hydrated oocytes ranged from 0.80 to 1.90 mg. Relationships of this variable with total length and age were best described by a logarithmic model during the spawning peak. At the beginning and at the end of the reproductive season no significant relationship between these variables was observed, but a decrease in egg dry weight was detected during the spawning period. In general, young spawners (≤5-year-old) showed more variability in egg dry weight, which was associated with a reproductive season shorter than that of old females. Relative condition factor did not shows a significant relationship with oocyte dry weight, and mean values of this index were similar for different months of the spawning seasons analysed. 相似文献