Study On Evaluating The Rotten Degree Of Several Organic Decomposing Matter And Choosing The Complex Medium

we can make full use of resources of agricultural residue efficiently and reduceenvironmental pollution. In the open field, using the crushed corn straw, wheat straw,sheep manure and cow dung as materials with high temperature decompositionmethod in this experiment, controlled the C/N ratio between25and30to compost thecrop straws. Based on the temperature, pH, and seed germination index weremeasured to evaluate the compost maturity. Making use of different proportions ofstraw and manure as the material to carry out the rearch. The composted organicmedium mix the different proportions of sand and vermiculite to carry out theseedling pot experiment of Brassia campestris L., which as indicator plant. Throughinspected the root length, plant height, the number of leaves, chlorophyll content andbiomass of Brassia campestris L., to investigate the influence of the compositemedium on the growth and development of the Brassia campestris L. to choose thebest composite medium proportioning. The results as follows:1.In this study,the temperatures of all the treatments reached at50℃the4day,the day of keeping high temperature come up to more than3days. Each gradation ofthe temperatures of the treatments adding corn straw to the compost touch50℃at the3day, but the temperatures of the treatments adding wheat straw to the compost areslower at3rd and4th day, which the core temperatures is higher1～2℃. Eachgradation of the temperatures of all the treatments drop to about30℃at40thto42thday, and the fluctuations are not obvious. The matter has fermented thoroughly.2. PH of the treatments adding corn straw to the compost are all over8.0andelevated with the time slightly, The wheat straw ones are all under8.0and take onalkalescency18days ago, which descend at earlier stage and go up presently18dayslater. Germination index of the treatments adding corn straw to the compost and T5come up to more than80%at30th day, seed germination index of T4is80.24%at42th day and T6is74.57%at the end of compost. All the treatments meet the maturityindex requirements. 3. From planting the Brassia campestris L. with organic medium, compare thetreatments adding corn straw to the compost with adding wheat straw ones, plantheight, the number of leaves, leaf area, chlorophyll content have shown significantlydifferent,no obvious difference between the rate of emergence and root length. Butthe treatments, which has the same straw and different manure and inorganic had nosignificant difference between each other. In contrast, the shoot dry weight of A1,A2,A3,C2can reach more than0.1g.The best processing is corn straw and sheepmanure with inorganic to the6:4, rate of emergence is up to98.6%, root length is9.7cm, plant height is11.6cm, leaf area is16.5cm2, number of leaf are7.0, content ofchlorophyll is1.03mg g-1.4. The treatments adding corn straw to the compost is earlier about one weekthan adding wheat straw ones. In the experiment of Brassia campestris L. Everystroma can promote the growth and physiological characteristics of Brassiacampestris L. The stromas were blended by corn straw and sheep manure were betterin the respect of rate of emergence,root length, plant height, the number of leaves, leafarea, chlorophyll content and biomass, but have no significant difference betweeneach other. In a word, The best processing is corn straw and sheep manure withinorganic to the6:4,which was recommended as the best complex medium to cultivateplants.