| Platycodon grandiflorum(Jacq.) A.DC is a perennial herb,to root medicine.alias Baiyao,the head monk,the monk caps,firecrackers flowers,flowers burden,four leafy vegetables,bell flowers,soil ginseng.Is medicine, food,ornamental plants used along with the economy.Platycodon grandiflorum(Jacq.) A.DC.of Wei Ku, Chea Sim,Ping,in the lung by,a Xuanfei gas,expectorant Painong the effectiveness.Exogenous commonly used in the treatment of cough,sore throat swelling and pain,lung carbuncle spitting,chest full rib pain, abdominal pain Dengzheng dysentery.China has most of the production and distribution,to the northeast and north China's largest production.In recent years An increasing number of Platycodon grandiflorum(Jacq.) A.DC.medicinal and economic value were found in recent years,increase the amount of wild Platycodon grandiflorum(Jacq.) A.DC. resources can not meet the need,throughout a wide range of artificial cultivation of Platycodon grandiflorum (Jacq.) A.DC.,although cultivation techniques in recent years has been some research,However,due to Campanulaceae widely distributed,the environment changes,the complexity of biological characteristics, making the current low level of cultivation techniques,many places still not perfect enough.In particular,as the ingredients security,stability,export control and the special requirements of countries to "Chinese medicine to produce quality management practices(GAP)" to the medicine production and management to higher requirements.To this end,this test to study for the Platycodon grandiflorum(Jacq.) A.DC.,in accordance with the "Chinese medicine to regulate the production quality management(Trial)",launched a Platycodon grandiflorum(Jacq.) A.DC.and germination of seeds,mulching Hole Platycodon grandiflorum (Jacq.) A.DC.cultivation techniques,cultivation.,fertilizer and fertilizer Screening Production by the impact of weeds in field investigations and efficient low toxicity herbicide screening,selection and high efficiency and low toxicity fungicides effect,growth-control technology to yield cultivation of key technologies,such as pilot studies.And on this basis,summed up a set of standardized cultivation Platycodon grandiflorum(Jacq.) A.DC.key production technologies.The results will now be summarized as follows:1.Literature Review Access to a large number of Platycodon grandiflorum(Jacq.) A.DC.research data and the relevant aspects of this study,summarized previous research results and the existing problems,and medicine production Platycodon grandiflorum(Jacq.) A.DC.against the problems that exist in the quality of research in medicine and the weak links of the present papers on the content and objectives.2.Researching on the seed of Platycodon grandiflorum(Jacq.) A.DC.The seeds of the Platycodon grandiflorum(Jacq.) A.DC.form,a pilot study on life,and on the storage temperature,moisture,different soaking time,GA,KMnO4,ultrasound treatment on the Platycodon grandiflorum(Jacq.) A.DC.seed germination rare impact.The results showed that:Platycodon grandiflorum (Jacq.) A.DC.seed Luan zhuang Oval,after the seeds mature dark brown,with shiny,the skin of a fine stripes, seed side of endemic fin,of umbilical in a slightly narrower at one end;Platycodon grandiflorum(Jacq.) A.DC.seed with storage time Extended,and the germination rate also decreased,and more storage month,the germination rate decreased 15 percent.Storage to 12 months,only 10 percent germination rate below Platycodon grandiflorum(Jacq.) A.DC.seed for the storage temperature of 25℃;Platycodon grandiflorum (Jacq.) A.DC.seed germination should be maintained without water;Platycodon grandiflorum(Jacq.) A.DC. seed germination should be better to soak 12,24 hours;Platycodon grandiflorum(Jacq.) A.DC.seed germination before the 200 ppm,400ppmGA soak 24 hours a higher germination rate of 5 percent of the immersion KMnO4 the longer the Platycodon grandiflorum(Jacq.) A.DC.seed germination rate of suppression is,and this suppression was significant difference in both the dry seed Campanulaceae Seed or wet seed,after ultrasound treatment after ultrasound treatment than the germination rate.3.Researching on Mulching Hole cultivation techniques of Platycodon grandiflorum(Jacq.) A.DC.Due to the drought affecting the North Platycodon grandiflorum(Jacq.) A.DC.is drier than usual spring sowing the primary factor in the development of production,therefore,this study carried out mulching Dayan Hole of the Platycodon grandiflorum(Jacq.) A.DC.cultivation techniques.The results show that:black film covering the field of early Chinese Platycodon grandiflorum(Jacq.) A.DC.mulching the soil surface temperature increase,rainfall preserving soil moisture,moisture,soil moisture effectively improve the topsoil. Effective solution to the North cold spring drought on the growth of the Chinese Platycodon grandiflorum (Jacq.) A.DC.adversely affected.Good plant growth.Thus,has markedly improved the production Campanulaceae;Dayan hole sowing seeds at the same time see light,not the other light.Played a role in promoting grass seedlings suppression.Miao-obvious performance,Zhuang Miao,reducing the shortage of grass production results;achieve labor savings,to increase the effectiveness of production. 4.Researching on the suitable for the cultivation model of Platycodon grandiflorum(Jacq.) A.DC.In summing up vast literature on the basis of information obtained:Transplanting time(A),transplanting density(B),fertilization methods(C) and the number of Zhonggeng(D) is the impact on output and quality of the Chinese Platycodon grandiflorum(Jacq.) A.DC.key technologies.However,this is still not four factors together for the pilot study,this study orthogonal experimental design of these four factors together for the pilot study.The results show that:Platycodon grandiflorum(Jacq.) A.DC.the best combination of cultivation techniques for transplanting time(April 30),transplanting density(15cm×15cm),fertilization methods [farmyard manure(base fertilizer 2000)+topdressing(1000+farmyard manure for fertilizer)],Zhonggeng number(1).5.Screening and efficient fertilizer on the yield of fertilizerPlatycodon grandiflorum(Jacq.) A.DC.root category for cargo medicine,the organic and inorganic soil nutrients have great demand.So in the cultivation early enough fertilizer application,is conducive to maintenance of soil fertility and increase the output of Platycodon grandiflorum(Jacq.) A.DC.roots and plant disease-resistant capacity.To this end,the Chinese Platycodon grandiflorum(Jacq.) A.DC.field in the actual production of several commonly used fertilizer efficient screening studies,research results show that:in the best economic output Platycodon grandiflorum(Jacq.) A.DC.principle,Daejeon Platycodon grandiflorum (Jacq.) A.DC.application of the principle of the best fertilizer is highly effective:in applying the appropriate amount of fertilizer available At the same time,the choice should be efficient with the use of organic fertilizer for the best choice of diammonium glycyrrhizinate(0.03) + Hefeng organic manure(0.2) or urea(0.03) + Hefeng organic manure(0.2),the proposed production on the use of large area,Yield obvious.6.Researching on the Efficient and low toxic effect on fungicide screeningAt present a wide variety of pesticides,the new pesticide update very quickly.At the same time, pesticide abuse,residual phenomena have occurred,a direct impact on Chinese Platycodon grandiflorum (Jacq.) A.DC.product output and quality.To this end,the screening of high efficiency and low toxicity pesticides as important bases for research.The results show that:the sea due to flutter with the commonly used drugs and manganese-Xin,and more anti-adriamycin have the same effect,the incidence rates of zero, and production is also very high;thiophanate-methyl of Campanulaceae the field production injury,Pesticide residues,proposed to stop production on the use of carbendazim,triadimefon,organic liquid sulfuric acid, zinc-generation low incidence rate in the year to combat the disease have a certain role in the production can continue to use. 7.Researching on the Field investigation of weeds and efficient screening of low toxicity herbicide Use of inverted "W" 9 sampling method Platycodon grandiflorum(Jacq.) A.DC.field of weeds conduct a survey,the survey results show that:Platycodon grandiflorum(Jacq.) A.DC.production fields are more than 20 species of weeds and grass have large crabgrass,barnyard grass,Eleusine indica grass,thrush grass,green bristlegrass,Bermudagrass,star grass,Chenopodiaceae have Chenopodium album,Kochia scoparia, Portulacaceae purslane,Euphorbiaceae have to Jin,iron amaranth,Amaranthaceae anti-sticks amaranth, Solanaceae acid pulp,Lung Kui,Compositae Cocklebur,The plight of dioxin food,Cier vegetables,such as sub-Cyperaceae Cyperus rotundus.One relative abundance of 10 or more in large crabgrass,purslane,green bristlegrass,Cier vegetables,a bowl of flowers,iron amaranth,palygorskite Fan,Li,Yang Yang,such as pigs9.One large crabgrass,purslane,green bristlegrass,Cier vegetables,a bowl of flowers,and other five kinds of relative abundance were 52.10,50.22,45.32,40.15,32.56 is obviously Platycodon grandiflorum(Jacq.) A.DC. production base of the dominant species of weeds,and combined survey results Launched a Chinese Platycodon grandiflorum(Jacq.) A.DC.best-efficient low toxicity herbicide screening study results showed that:50%alachlor acetochlor EC EC +50%+72%+45%of all EC Seoul grass nemesis EC on Platycodon grandiflorum(Jacq.) A.DC.processing performance in the field For the efficient herbicides,the effect could reach 90 percent or more of their individual performance for the use of herbicides in effect,prevent the effects of 80 percent.Platycodon grandiflorum(Jacq.) A.DC.-40 percent atrazine use of plastic suspended after 10 days of treatment,generated injury,the plants growing slowly,short stature,leaves gradually turn yellow, some of which withered after 45 d death.Note atrazine on the growth of Chinese Platycodon grandiflorum (Jacq.) A.DC.has a serious impact on the recommendations in the non-adoption of production.8.Researching on the Growth control technology to study the impact of productionPlatycodon grandiflorum(Jacq.) A.DC.seed there is an obvious difference in the maturity of the issue. How to create high-quality seed varieties Platycodon grandiflorum(Jacq.) A.DC.breeding system,to effectively improve the quality of Platycodon grandiflorum(Jacq.) A.DC.seed for the production of mature, full,healthy seed.Current production is in urgent need of resolving the important issues.To this end,the pick of Lei,Shu flowers,fruit thinning technology on the impact of seed production,to increase the yield and quality of Platycodon grandiflorum(Jacq.) A.DC.seed production to find effective measures.The results show that:Jie Genghua a long period,another flower,pregnant buds,Huaguo the growth and development to consume a large amount nutrition,not conducive to root of the weight gain.Lei Zhaihua to reduce the consumption of nutrients,so that focus on nutrition for the growth of the roots underground,so do not need to stay in the production of the field to remove all the bud.General squaring period in addition to timely Qia bud, the sooner the better,the results of the Zhaiguo,less effective.
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