Large Area Of Rice Cultivation Fields Cultivated Design And Promotion Of Plateau Dam Area

As human development and accelerated urbanization construction,On the one hand the requirements of food production must meet human needs,on the other hand planting space of food has been further compressed.Rice,defined as the second biggest crop in the whole world,played an important roles in ensuring global food security and alleviating the contradiction between population and the reduction of arable.Until now,the primarily approach achieving a higher production is to increase the grain yield per area.Rice precise and quantitative cultivation techniques significantly increased the rice yield and has been widely used.In this paper,we focused on the distributed rice growers the in Yunnan Plateau dam,and designed the promotion of rice cultivation technology to make precise quantitative design the whole system of Rice precise and quantitative cultivation techniques according to the actual situations,then carried up some centralized management and demonstrations in different plots which the large area paddy field scattered by farmers.Here,we got some valuable marketing experience,mainly as follows:(1)Location and sowing date determination.We set up the experiments and high-yielding researches based on the location climatic conditions and the mass cultivation technology.The sowing date primarily depended upon the heading stage ecological conditions,it's better to conduct our researches in a suitable temperature,less-rainfall weather?The plots were arranged in the places where characterized for the greater solar radiation and sunshine duration,abundant heat,suitable temperature,less precipitation and atmospheric humidity.(2)Target production design.It's necessary of cultivation introduction for an objective evaluation test whether a species with high yield potential.In this paper,we compared eight hybrid rice species,there were a greater grain yield of some species(for example,T618,Yliangyou2010,Liangyou 92,Y liangyou 900,Yunliangyou 8188).Meanwhile we measured the comprehensive properties,and we demonstrated the species called Y Liangyou 900 as commercial varieties due to the greater characteristics of large panicle with moderate shattering,erect,straight and medium length leaves,plant height 90cm,strong tillering ability,disease resistance and better quality.Thus,we designed the yield components with(18?20)×104 panicle per mu,275 spikelet per panicle,5950?5500 spikelet per mu,more than 80%grain filling ratio,25 mg grain weight and 990?1100 kg per mu goal yield.(3)Seedlings methods.There are advantages of using dry nursery way and transplanting with soil in seedling process.According to the seedling quality and the probability of large area seedling process,this way could ensure the the seedlings number per hole.(4)Density design.According to the design of basic seedling general principles density design is appropriate to relax the spacing,increase the number of seedlings per hole,both to ensure spike,but also improve the lighting conditions in the latter part,to promote the formation of strong rod big spike,while saving Zaiyang have jobs.According to the design of basic seedlings 24,000/acre,select the density of the spacing of 5 inches and 10 inches per acre 12,000 points,2 seedlings per hole.(5)Nitrogen design.According to quantitative cultivation techniques basic requirements,based on each kilogram of grain uptake 1.75kg,the target yield 1050kg,fertility and 470kg/acre and nitrogen use efficiency 42.5%of the total design of nitrogen fertilizer 22kg.Based on preliminary experiments and demonstrations summary of the dam plateau,according to 5:5 after the shift is easy to achieve high yield.(6)Water management.4.5-leaf stage to 5.5-leaf stage to the "ground row ground irrigation",5.5 to 9.5-leaf stage start-leaf stage to "ground irrigation can not be excluded",9.5 to 12.5 leaf-leaf stage of "less filling more sun ",has since been to before harvest remain" alternating wet and dry."(7)Diagnostic field.Before administering panicle diagnosis must be carried out in the field,according to the groups and leaf plots divide different types of plots to set different nitrogen fertilizer and time.Most of the plots as a class field,which is suitable for groups and normal yellowing of the plots;group II field suitable but leaf color deep;lack of three field groups,color subdued and fertilizer shortage of symptoms;four types of field groups is low and leaves deep.In addition to the safety of a class of ear manuring field to other than in accordance with the design,the total amount of fertilizer in the padded designed under the premise that other types of plots through inverted 5-leaf stage start fertilizing,then pour 4 leaf fertilization delayed time method,the highest yield for a class field,other types of plots also reached high yield,but there is a gap and design.Nor the formation of different types of terraces on the difference in plant type,plant type all plots are the top 3 leaves the longest,followed by the top 4 leaves,leaf flag and 5 the shortest construction.Such spatial structure ensures create high photosynthetic efficiency,high yield beneficial.