| Medicinal plants have an important position in China's medicine market, Most species in a long-term shortage of state.In alpine areas prom the limited focus on the efficient production of farmland, to achieve active returning farmlaotion the chimonophilous crop, can make farmers harvest more on the basis of the economic benefits, to change the current low yield inefficient, extensive cultivation of the production status, takend, Obtain a higher Economic and social benefits and ecological benefits. This study According to in alpine area of north China the main cultivated crop like naked oats, potatoes received lower cost, less income of the farmers, And issues such as bare ground in winter and spring led to sand dust, based on field experimental research methods, introduction of 14 species of medicinal plants, focusing on those plants in alpine area of North China the growth characteristics, cold resistance capacity, And as a representative of the plant Glehnia litteralis Fr. Schmidtex Miq., further study of the effect of light characteristics and potash fertilizer The results show that:First. Comprehensive analysis of introduced the 14 species of medicinal plants seedling conditions, plant height, root length and root crude, astragalus, Radix scutellariae, balloonflower and Glehnia litteralis Fr. Schmidtex Miq. most suitable for cultivation in this area, entrapement, Shoot dry, rhynchopylla, Saposhnikovia Divaricata, ironweed and anemarrhena rhizomemore appropriate planting here, angelica,licorice, for regional Provide the technical foundation of Introduction of new agricultural crops and Layout to achieve the diversity of field crops.Second. Through observation the overwintering and reproductive morphology of those medicinal plants which suitable for the alpine area, And the results of artificial cold under low temperature stress physiology of root and plant growth and recovery verification body, show that The cold resistance from strong to weak were, balloonflower, astragalus, Shoot dry, ironweed, Radix scutellariae, anemarrhena rhizome, anemarrhena rhizome (Growth for three years), Glehnia litteralis Fr. Schmidtex Miq. and entrapement. Perennial medicinal plants have a better ecological adaptability of cold resistance, in alpine areas of North China perennial fully winter, in extreme cold years, Take simple coverage measures can improve the quality of cold resistance, Provides a technical basis for regional development of chimonophilous medicinal plants, the rational use of cold weather resources.Third. Glehnia litteralis Fr. Schmidtex Miq. photosynthetic results show that the Glehnia litteralis Fr. Schmidtex Miq. is a typical positive plants, strong adaptability to light, alpine area in north China of high intensity environment suitable for planting Glehnia litteralis Fr. Schmidtex Miq., at midday high temperature and high PAR resulted in a net photosynthetic rate, transpiration rate and water use efficiency decreased, photosynthesis appeared "midday depression", same as Fv / Fm decreased and Glehnia litteralis Fr. Schmidtex Miq. occurred midday photoinhibition, provides a theoretical basis of the area for exploring physiological and biochemical functions and to increase their photosynthetic efficiency of chimonophilous medicinal plants.Four. Glehnia litteralis Fr. Schmidtex Miq. potash results show that effect of more potassium on Glehnia litteralis Fr. Schmidtex Miq. role a certain in promoting height. Can significantly increase the leaf area, conducive Glehnia litteralis Fr. Schmidtex Miq. root elongation and accumulate upground dry weight, root dry weight, Can significantly improve the yield and active ingredients polysaccharide of Glehnia litteralis Fr. Schmidtex Miq. in alpine area of north China plant Glehnia litteralis Fr. Schmidtex Miq. use K2O as 210kg/hm2 is the appropriate amount, provide technical support for regional rational application of K fertilizer, to improve potash fertilizer of chimonophilous medicinal plants.Five.Studies have shown that the economic value of introduced medicinal plants, higher economic benefits can be obtained by planting astragalus, Radix scutellariae, balloonflower, entrapement, Glehnia litteralis Fr. Schmidtex Miq. , Saposhnikovia Divaricata, and ironweed. To get 30,000 Yuan / hm2 ~ 49500 Yuan / hm2, 5.0 ~ 8.55 times than major local crops like naked oats 6,000 yuan / hm2, provide economic benefits for regional farmland protection and efficient production and improve the economic benefits of farmers. |
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