Resources and Environment
From the purpose, content, characteristics, principles, patterns and technology of eco-agriculture with high efficiency, the theory and practice of eco-agriculture with high efficiency had been analyzed generally and systematically. The results showed that: (1) the concept of eco-agriculture with high efficiency was purposed in 1991 in China; (2) Eco-agriculture with high efficiency emphasized on the ‘high efficiency’, ‘ecological’ and ‘combine’; (3) Eco-agriculture with high efficiency had a lot of characteristics with more organisms, good environment, good structure, strong function, good quality, high efficiency, low-carbon emissions, and sustainable development; (4) The principle of the eco-agriculture with high efficiency with the increasing of output and efficiency lay with full use of land, three-dimensional use of sunlight energy, excess use of seasons, multi-layer use of moisture, high efficient use of fertilizer, symbiosis and complementation among organisms, ecological disaster-reduction, and recycling use of agricultural resource; (5) The typical modes of eco-agriculture with high efficiency were these: the three-dimensional use of agricultural resource, the type of biological symbiosis among organisms, the conjunction type of conglomerate, the type of the industrial extension, the technology-driven type, the type of the environmental improvement, the resource recycling type, and the type of the leisure travel; (6) The key technologies of eco-agriculture with high efficiency were these: the resources saving technology, the irrigation and fertilization regulating technology, the biological soil improving technology, the disaster prevention and reduction technology, the resource comprehensive utilization technology, the soil and water conservation technology, structural adjustment technology, the new energy development technology, the valley harnessing technology, and the current modern new high technology.
By investigating and analyzing medicinal flowering plants of Hohhot Xiaojinggou ecological park, the results appeared in the wild flower plants with medicinal value of 53 families, 143 genera, 253 species, of which most species of composite, a total of 19 genera, 36 species 14.22% of the total number of species, followed by 12 genera and 28 species of Leguminosae, 11.06% of the total number of species; which antipyretic plant contained the largest number of subjects, a total of 19 families and 71 species, accounting for 28.06%. There were 5 families and 6 species Mongolia specific medicinal plants in it, accounting for 2.37%, and proposed ways to protect and use.
Powdery mildew, stripe rust, leaf rust are harmful diseases to reducing yield in wheat. In order to select the source resistance, we have measured 308 germplasm resources by the method of field investigation. The result of this study showed that 19 of them with high resistance to powdery mildew, 68 of them with high resistance to stripe rust, 50 of them with high resistance to leaf rust resistant and 3 of them with high resistance to all these three diseases. And these results are references for wheat breeding.
The woody vegetable is a promising resource in the nutritional value of food, medicinal health value, economic value and eco-tourism value. In order to promote protection and utilization of the woody vegetable resources, the woody vegetable resources in Tianjin were studied, according to field investigation, oral probe from native, market research as well as reviewing widely literature. The results showed that a total of 41 species of common woody vegetable resources were investigated in Tianjin, which belong to 23 families and 35 genera. The number of Papilionaceae, Rosaceae and Salicaceae had largest species (15), accounting for about 36.6% of the total number. The number of Anacardiaceae, Magnoliaceae, Ulmaceae, Rutaceae, Celastraceae and Actinidiaceae had the next largest species (12), accounting for about 29.3% of the total. Among these 22 species were native plants, belonging to 15 families, 20 genera, accounting for 53.7% of the total, and the other 19 species accounting for 46.3% were introduced from other regions of China because of viewing or green. It is found that the species of native plant was larger than that of other regions of China. The feasibility of the development and the role in the modern agriculture of woody vegetable resources was analyzed. Finally the development suggestions of woody vegetable resources were proposed.
Straw is the largest renewable resource in the world. It can realize the use of renewable resources, relieve the energy resources crisis, protect the environment and realize the sustainable development of agriculture and economy by the economic and effective utilization of straw. However, the complex structure of cell wall limits its application in the animal husbandry and industry. In this paper, the present situation and nutrition characteristic of straw was analyzed, and the pretreatment methods of physical, chemical, combined physical and chemical, and biological at present were discussed. It provided the references for the utilization of straw resources and the development of animal husbandry.
Basis on the investigating the original ecological environmental conditions of Brasenia schreberi, such as the climate and hydrology of its place of origin etc. as well as its current planting situation, this paper explained the advantages and potentials of exploiting and utilizing the original ecological environment of the Brasenia schreberi in Mahu Lake. It had natural conditions and excellent quality, the good foundation of development, great potential of development and other advantages, there was also original habitat degradation, weak economic base, low scale, insufficient investment in research and other disadvantages. From aspects and so on perfect regulation system, strengthen the original habitat protection, increased research efforts and drive technology demonstration proposed advances the protection, exploitation and utilization of Brasenia schreberi in Mahu Lake of Leibo County.
Resources and Environment
