Effect Of Greenhouse Seeding And The Main Environmental Factors On Growth In Angelica Sinensis

Based on the problem of low productivity, high early bolting rate in angelica sinensis' cultivation, lots of scientists carried out the researchs on environmental factors which influence the growth of angelica sinensis.the present test was carried out in angelica sinensis'seeding in greenhouse,reseasch the effect of seeding in greenhouse and angelica sinensis'early bolting rate by altitude, effective accumulated temperature, in order to provide reference for improve yield and decreased early bolting rate, established producing areas. The main results were drawn as followings:1.60% matrix formula for rural land,20% manure decomposition,20% slag sterile seedlings out in the Angelica plant height, leaf area, root length, root rough handling is superior others. greenhouse Daejeon transplanting seedlings, the field of early bolting rate was 0. Greenhouse seedling transplanting different processing, experimental results show that the seedling age 100 days to deal is the best.. The yield of dry matter is 1387.88 kg/hm2.film culture than in open field cultivation has obvious advantages of high-yielding, The yield of dry matter is 1973.20 kg/hm2. Greenhouse production of seedlings available for the commercial production of Angelica.2. Quality of seedlings of Angelica to its survival rate are not great, this has some effects in yield.The general trend in effect of seeding for economic yield is:big seedlings>middle seedlings>small seedling. middle seedlings(0.3 cm<d<0.5 cm) not only obvious superiority on growth,but also the lateral root are less.So, selection middle seedlings is the one of effective measures for angelica sinensis. high-yield and efficient in transplanting of seedling of greenhouse.3.When altitude is lower than that 2640m, it has little effect yield. Yield decreased significantly above 2640m. plant height,leaf number,root length all manifestations very significant negative correlation.In this conditions, the agronomic characters is best on 1970m～2640m, it is the the optimum growth region for angelica sinensis. The light and temperature over 2640m go against improve yield, is not to suitable plant.4 After seedling emergence,dry matter in root and whole plant raised with the increase of effective accumulated temperature, and the process accord with the curve described by Logistic equations. The ranges of the corresponding effective accumulation temperature were 1625.8℃～3011.98℃and 668.896℃～1466.99℃. The average growth rate were 0.1873/(d·℃ ·plant) and 0.0190/(d·℃·plant) respectively in the fast-growth period of Angelic. The process, that dry matter in stem and leaf changed with the effective accumulated temperature, met the curve that described by Logistic equations. The maximum amount of dry matter accumulation in stem and leaf appeared when k was 1615℃The conclusion is that:Production areas in Weiyuan and Minxian can product angelica sinensis by selecting the seedling from greenhuose that seedling age is 100d and root diameter is 0.3 cm<d<0.5 cm.