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81.
Niza ME Ferreira RL Coimbra IV Guerreiro HM Félix NM Matos JM de Brito TV Vilela CL 《Zoonoses and public health》2012,59(1):35-38
The pine processionary caterpillar, Thaumetopoea pityocampa, is considered an emerging pine pest in Mediterranean countries, with high medical relevance. In recent years, adverse reactions reports in humans following contact with T. pityocampa have been increasingly reported. Dogs living in pinewood areas are also frequently exposed to the caterpillar. This work consisted on a retrospective study of 41 cases of lepidopterism. All dogs presented drooling, dysphagia, submandibular lymphadenomegaly and clinical signs of pain. The animals were distributed in three groups, according to the time span from exposure to the caterpillar until presentation: up to 2 h (group 1), 2-5 h (group 2) and more than 5 h (group 3). All animals from groups 2 (n = 5) and 3 (n = 9), and eight dogs from group 1 (n = 27) developed lingual necrosis. Lepidopterism coursed through a predictable clinical pattern. The evolution was mainly dependent on the time span between exposure to the caterpillar and medical intervention, which should take place earlier than 2 h from exposure. 相似文献
82.
Carla Verônica Corrêa Aline Mendes de Sousa Gouveia Bruno Novaes Menezes Martins Natália de Brito Lima Lanna Ana Emília Barbosa Tavares Veridiana Zocoler Mendonça 《Journal of plant nutrition》2018,41(10):1345-1350
The current study aimed to evaluate the effect of top-dressed potassium (K) application on the production of hybrid cucumber “Sapphire.” The experimental design was a randomized complete block, with five blocks of 0.80 × 0.40 m2 each and eight replicate plants per block. The five fertilization rates of K used were 0, 45, 90, 135, and 180 kg K2O ha?1. Data collection consisted of the estimation of fruit diameter, fruits length, fruit fresh and dry weights, the number of fruits per plant, and the weight of fruits per plant. The number of fruits per hectare and the fruit fresh weight per hectare were calculated. Fruit tissue was analyzed for determination of macronutrient concentrations, pH, titratable acidity, soluble solids, sugar contents, and protein content. The data were statistically analyzed using regression analysis and analysis of variance (ANOVA). There was a significant effect of the fertilization rate of K on fruit diameter, fruit fresh and dry weights, macronutrients concentrations in fruits, titratable acidity, soluble solids, and reducing sugars. A quadratic equation was adjusted for the number of fruits per plant and per hectare; fruit yield per plant and per hectare, with maximum top-dressing doses, was estimated to be between 60 and 95 kg K2O ha?1. A linear increase was obtained in the pH. An increase in the K fertilization rate caused a linear decrease in the fruit length. 相似文献
83.
aquasaúde: A mobile application for educational training on prevention of shrimp pathogen‐associated diseases 下载免费PDF全文
84.
Crude protein levels in diets for two growth stages of Nile tilapia (Oreochromis niloticus) in a biofloc system 下载免费PDF全文
Marcos A da Silva Érika R de Alvarenga Gabriel Francisco de O Alves Ludson G Manduca Eduardo M Turra Tulio S de Brito Suellen Cristina M de Sales Alaion Fonseca da Silva Junior Werona J M Borges Edgar de A Teixeira 《Aquaculture Research》2018,49(8):2693-2703
Biofloc technology (BFT) provides an additional feed source for aquatic organisms through the conversion of waste in microbial flocs. Because of this, the suitable protein level in a diet for animals in this system could be different from those in conventional systems. Our objective was to determine the suitable protein level in the diet of Nile tilapia juveniles reared with BFT. Two experiments were carried out with tilapia weighing ~10 g (first experiment) and about 50 g (second experiment) during 61 and 98 days respectively. Five crude protein (CP) levels (within 17% and 33%) were tested. The increment of CP resulted in a reduction in dissolved oxygen, pH, alkalinity and an increase in dissolved phosphorus, total suspended solids and total ammonium nitrogen. The crude protein level had a significant effect (p < 0.05) on animal performance. The linear response plateau model was the best fit for the final weight and weight gain data in the two growth phases. In conclusion, tilapia juveniles of 10–60 g and 60–230 g in biofloc can be fed on diets with 28% of CP (26% of digestible protein) and 22% CP (20% of digestible protein) respectively. 相似文献
85.
M.V. Maciel S.M. Morais C.M.L. Bevilaqua R.A. Silva R.S. Barros R.N. Sousa L.C. Sousa E.S. Brito M.A. Souza-Neto 《Veterinary parasitology》2010
The chemical composition of essential oils from three species of plants belonging to the Eucalyptus genus was determined and, their insecticidal effects on egg, larva and adult phases of Lutzomyia longipalpis were assessed. The insects were collected in the municipality of Sobral in the State of Ceará, Brazil. Five treatments with different concentrations were performed along with two negative controls, distilled water and Tween 80 (3%), and a positive control, cypermethrin (0.196 mg/ml). The tests were carried out in plastic pots internally coated with sterile plaster and filled with a substrate made of rabbit feces and crushed cassava leaves. The eggs, larvae and adults were sprayed with the oils. The hatched larvae were counted for 10 consecutive days and observed until pupation. Insect mortality was observed after 24, 48 and 72 h. E. staigeriana oil was the most effective on all three phases of the insect, followed by E. citriodora and E. globulus oils, respectively. The major constituents of the oils were Z-citral and alpha-citral (E. staigeriana), citronellal (E. citriodora) and 1,8-cineole (E. globulus). The Eucalyptus essential oils constitute alternative natural products for the control of L. longipalpis since the median effective concentration (EC50) values revealed relevant action as compared with other natural products, some of their chemical constituents are already known for their insecticidal activity and these oils are produced in commercial scale in Brazil. 相似文献
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88.
José Carlos Hernández Sabrina Clemente Carlos Sangil Alberto Brito 《水产资源保护:海洋与淡水生态系统》2008,18(7):1091-1108
- 1. The aim was to determine the status of subtidal rocky benthic assemblages in three marine protected areas (MPAs) of the Canary Islands: (1) La Graciosa; (2) Mar de Las Calmas; (3) La Palma. Sea urchin (Diadema aff. antillarum) populations and non‐crustose macroalgal cover were surveyed, and used as an indicator of conservation status in the three MPAs as well as in a highly fished area (HFA‐Tenerife Island).
- 2. Comparing characteristics between each MPA and the HFA, and considering issues of management and design, it was concluded that the three MPAs each have a different conservation status. ‘Mar de Las Calmas’ marine reserve was found to have the most desirable conservation status, followed by ‘La Palma’ marine reserve based on sea urchin populations and non‐crustose macroalgae assemblages.
- 3. Conversely, ‘La Graciosa’ had the highest density of D. aff. antillarum and the lowest cover of non‐crustose macroalgae out of the three MPAs. Values were comparable to those at the HFA, which shows ‘La Graciosa’ to have the undesired conservation status.
- 4. Different spatial distribution patterns of non‐crustose macroalgal as well as different algal composition cover were observed between the three MPAs and the HFA. These differences were principally attributed to the intensity of grazing activity of the key herbivore D. aff. antillarum. It is suggested that the different study areas correspond to different phase shifts that imply differing resilience of systems that should be taken into a count in future conservation strategies.
89.
V. R. Moraes O. R. Brito R. A. Fioretto 《Communications in Soil Science and Plant Analysis》2016,47(5):571-580
The increasing demand for fertilizers and the fact that the world reserves of phosphorus (P) and potassium (K) are depletable make appropriate soil management a critical factor in agriculture. Techniques for the fertilizer use and soil acidity corrective are becoming increasingly necessary to minimize the cost of yield and increase the nutrient efficiency. In view of the aforementioned, the present study aimed to assess the effects of gypsum application on the leaching of cations in the soil profile. A completely randomized design in a 5 × 4 factorial arrangement, with five replicates, was used. The treatments corresponded to five gypsum rates (0, 1, 2, 4, and 8 magnesium (Mg) ha?1) applied on broadcast of soil and at four depth sampled (0–5, 6–10, 11–15, and 16–20 cm). Gypsum application increased the fertility in depth, with the leaching of cations. There was an increase in soil pH, exchangeable K+ and calcium (Ca2+), sulfur (S–SO42?), P, boron (B), and manganese (Mn) concentration, cation exchange capacity (CEC), K+ and Ca2+ saturation, Ca2+/Mg2+, Ca2+/K+, and K+/(Ca2+ + Mg2+) ratios, and electrical conductivity in soil depth. On the other hand, there was a decrease in exchangeable Mg2+ and potential acidity hydrogen and aluminum (H+ + Al3+), available silicon (Si), Mg2+ saturation, and Ca2+/K+ and Mg2+/K+ ratio. These results demonstrate that the gypsum application in an Oxisol with 690 g kg?1 of clay improves the root system with a significant increase in the soil fertility in the profile. 相似文献
90.