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71.
72.
J. C. Rana K. Pradheep O. P. Chaurasia Sarvesh Sood R. M. Sharma Archna Singh Ranjna Negi 《Genetic Resources and Crop Evolution》2012,59(1):135-149
This paper analyzes the diversity, consumption and gathering patterns, and uses of wild edible plants among the tribal communities
living in cold arid region of Indian Himalaya. Eco-geographically, extremely cold climate, open vegetation, strong afternoon
winds and loose soils characterize the region. Wild edible plants have special significance in the livelihoods of tribal people
particularly during harsh winters when nothing grows on field. We gathered information on 164 wild edible plant species belonging
to 100 genera and 37 families sharing 14% of total plants species occurring here. Around 83% plant species were present in
pure wild state while 17% were in semi wild state/cultivated occasionally. Wild plants are eaten more as vegetable and it
was found that out of 101 plants used as vegetable, 57 are cooked and eaten and the rest (44) eaten raw. The species like
Pinus gerardiana, Prunus armeniaca, Hippophae rhamnoides, Bunium persicum are harvested more for commerce in the downtown markets while Lepidium latifolium, Taraxacum officinale, Urtica hyperborea, Capparis spinosa, Fagopyrum tataricum, Malva verticillata, and Rhodiola heterodonta are preferred for their medicinal and nutritional properties locally. Infrastructure development, more tourists flow, agricultural
intensification, more jobs and business opportunities have led to rapid changes in the life styles and food habits of the
people. Consequently, the age-old tradition of gathering wild edible plants is fading particularly among younger generations.
Nevertheless, people do realize the importance of wild edible plants, and therefore to harness the benefits of this unique
diversity participatory management and conservation programs, investigations on nutritional and pharmacological attributes,
and regulated market support for some important WEPs have taken up in the region. 相似文献
73.
The present paper reports the development of novel braided structures using polyamide 6.6 fibers for application as artificial anterior cruciate ligaments (ACLs). The developed structures were circular braids, axially reinforced with either a number of core yarns or braided structures. Tensile behavior of these structures was characterized and the effects of number of axial yarns or braids and, the number of yarns used in the axial braids were thoroughly investigated. From the experimental results, it was observed that the braided structures with axial braids could mimic the load-elongation behaviour of native ACL. The average breaking extension and strain at toe region were 30 % and 4.3 % respectively, which are in the range of native ACLs. The maximum breaking force and stiffness achieved with 7 axial braids, each produced using 6 yarns were 274 N and 13.5 N/mm respectively and, both breaking force and stiffess showed linear increase with the number of axial braids as well as number of yarns used in the axial braids. Therefore, it is possible to design an artificial graft using these novel braided sturctures with mechanical properties similar to that of native ACLs, through adjustment of these structural parameters, as these braided structures have much smaller diameter (0.5 mm) than native ACLs (11 mm). 相似文献
74.
Shalini Pulipati Suji Somasundaram Nitika Rana Kavitha Kumaresan Mohamed Shafi Peter Civ Gothandapani Sellamuthu Deepa Jaganathan Prasanna Venkatesan Ramaravi S. Punitha Kalaimani Raju Shrikant S. Mantri R. Sowdhamini Ajay Parida Gayatri Venkataraman 《水稻科学》2022,29(1):31-46
Asian cultivated rice shows allelic variation in sodium transporter, OsHKT1;5, correlating with shoot sodium exclusion (salinity tolerance). These changes map to intra/extracellularly-oriented loops that occur between four transmembrane-P loop-transmembrane (MPM) motifs in OsHKT1;5. HKT1;5 sequences from more recently evolved Oryza species (O. sativa/O. officinalis complex species) contain two expansions that involve two intracellularly oriented loops/helical regions between MPM domains, potentially governing transport characteristics, while more ancestral HKT1;5 sequences have shorter intracellular loops. We compared homology models for homoeologous OcHKT1;5-K and OcHKT1;5-L from halophytic O. coarctata to identify complementary amino acid residues in OcHKT1;5-L that potentially enhance affinity for Na+. Using haplotyping, we showed that Asian cultivated rice accessions only have a fraction of HKT1;5 diversity available in progenitor wild rice species (O. nivara and O. rufipogon). Progenitor HKT1;5 haplotypes can thus be used as novel potential donors for enhancing cultivated rice salinity tolerance. Within Asian rice accessions, 10 non-synonymous HKT1;5 haplotypic groups occur. More HKT1;5 haplotypic diversities occur in cultivated indica gene pool compared to japonica. Predominant Haplotypes 2 and 10 occur in mutually exclusive japonica and indica groups, corresponding to haplotypes in O. sativa salt-sensitive and salt-tolerant landraces, respectively. This distinct haplotype partitioning may have originated in separate ancestral gene pools of indica and japonica, or from different haplotypes selected during domestication. Predominance of specific HKT1;5 haplotypes within the 3 000 rice dataset may relate to eco-physiological fitness in specific geo-climatic and/or edaphic contexts. 相似文献
75.
N. P. Saxena M. C. Saxena P. Ruckenbauer R. S. Rana M. M. El-Fouly R. Shabana 《Euphytica》1993,73(1-2):85-93
A large global land area is affected by saline, alkali (sodic), and acid soil conditions. Cool season food legumes are important crops in many countries with such adverse soils. Tolerant genotypes have been identified in many crops, including legumes. However, very little has been published on selection of tolerant cool season food legume crops. The inadequate knowledge and understanding of the responses of cool season food legume crops to these abiotic stresses, necessitates action by a collaborative network of interdisciplinary teams to make rapid progress in identifying tolerant germplasm and developing cultivars better adapted to unfavorable soil conditions. 相似文献
76.
J. C. Rana T. R. Sharma R. K. Tyagi R. K. Chahota N. K. Gautam Mohar Singh P. N. Sharma S. N. Ojha 《Euphytica》2015,205(2):441-457
77.
Summary Variance analysis is used to measure stability (inter-temporal) and adaptability (over space) components of variance with multilocation-multiyear sorghum yield data from India. Adaptability and stability were highly correlated. Only the stability component is relevant for farmers in their adoption decision. Measures of farmer's risk aversion are used to rank genotypes according to preferences which take account both of yield and stability. Since yield differences were large and risk aversion moderate, preference based rankings did not differ markedly from yield based rankings. 相似文献
78.
On-farm varietal biodiversity was studied through household surveys in two high potential production systems in Chitwan and
Nawalparasi districts of the Nepal Terai and in Lunawada sub-district, Gujarat, India. Diversity was extremely low in Chaite rice in the Nepal study area (weighted diversity 0.04) and low in main season rice in the India study area (weighted diversity
0.34). In both areas, one cultivar dominated, CH 45 in Nepal and GR11 in India. In the India study area, biodiversity varied
with the socio-economic group and better-off farmers had a greater varietal diversity. Participatory varietal selection (PVS)
identified new varieties that farmers preferred. Their adoption by farmers increased on-farm varietal biodiversity within
the three cropping seasons studied. Despite the commonly assumed uniformity of high potential production systems, the new
varieties occupied specific niches in the farming system. Farmers' preferences for different varieties – there were large
differences in quality traits and maturity period among the new varieties – should help to maintain biodiversity. Overall
production is expected to increase as each niche becomes occupied increasingly by the best-adapted variety. PVS is a simple
and powerful method of increasing food production in the high potential production systems that produce most of the developing
world's grain.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
79.
Sharma Umesh Bhardwaj Daulat Ram Sharma Sunny Sankhyan Neeraj Thakur Chaman Lal Rana Neerja Sharma Subhash 《Agroforestry Systems》2022,96(5-6):925-940
Agroforestry Systems - Agroforestry as a smart agriculture practice has started to get global attention nowadays. The present investigation is based on bamboo-ginger intercropping research carried... 相似文献