Renewable Emergy Features Of The New Sorghum Sbx

This paper studies the new type sorghum SBX and adopts the method of second of two factors and three factors randomized block design.The effects of cultivation measures in the previous quarter(different planting density and fertilization) on the bio-production of SBX and ratooning cultivation measures(different height of leaving piles,the amount of nitrogen fertilizer and seedling) on the characters,biological yield, quality and calorific value are studied in this paper.Here are the main results:1.The density and the amount of nitrogen fertilizer in the previous quarter affect the biological yield of the renewable quarter very obviously.Density's impacts on the yield are the largest.The general trend is:the yield increases with the density, but when it comes to a peak,the yield decreases with the density;while the yield increases with the amount of nitrogen fertilizer.By program optimization,the best implementation plan for the bio-production above 18012.97kg/hm² is found:the density is 338850～389580 strain / hm² and the amount of nitrogen fertilizer is 283.95kg/hm²～324.375kg/hm²2.The density and the amount of nitrogen fertilizer in the previous quarter affect the caloric value of the renewable quarter very obviously.The results showed that caloric value increased both with the the amount of densities and nitrogen fertilizer.By program optimization,the best implementation plan for the caloric value above 20863.8526j/g is found:the density is 365250～401850 strain/hm² and the amount of nitrogen fertilizer is 270.9 kg/hm²～324.375kg/hm².The results indicated that total energy increased with the the amount of densities as well as nitrogen fertilizer.When density and nitrogen fertilizer were both at 1.414,the total energy was at highest leveal of 92616920.26 kj/hm²;When density and nitrogen fertilizer were both at - 1.414,the total energy was at lowest leveal of 41722852.38 kj/hm². Thus,close planting and high amount of nitrogenous fertilizers usage would grain the relative high total energy.3.The renewable ability of SBX is very strong and the emergence rate is 100%. The stubble height has an obvious effect on the time of emergence.The time for the low is 5 days,while for the high is 7 days.The stubble height and the amount of nitrogen fertilizer affect the number of regenerated plants quite obviously.The amount of nitrogen fertilizer has the greatest effect.The number of regenerated plants of the low is more than that of the high.The differences of the amount of nitrogen fertilizer are also obvious.The number of the regenerated plants increases with the amount of nitrogen fertilizer.Futhermore,with low height and more nitrogen fertilizer, the regenerated plants grow strong and orderly.The three factors affect the height obviously.The amount of nitrogen fertilizer has the greatest effect,while the the number of seedling the least.The three factors also affects the number of leafs.The stubble height has the greatest effect,while the amount of nitrogen fertilizer the least.The effects of the three factors on the height and the number of leafs are also quite obvious.The result is:low stubble height＞high stubble height,most nitrogen fertilizer＞moderate nitrogen fertilizer＞less nitrogen fertilizer,1 seedling＞2 seedling＞whole seedling.The stubble height has the greatest effect on panicle.The panicle of A₁ is less than that of A₂.The new panicle is more than the old panicle.The amount of nitrogen fertilizer and the number of seedling affect the old panicle little while affect the new much.The order of the effect of the nitrogen fertilizer is:most nitrogen fertilizer＞moderate nitrogen fertilizer＞less nitrogen fertilizer;the order of the effect of the seedling is:whole seedling＞2 seedling＞1 seedling.As to the fresh weight and dry weight of the plants,the three factors all have obvious effects.The order is:nitrogen fertilizer＞number of seedling＞stubble height. It can be found out from the multiple comparisons that:low stubble height＞high stubble height,most nitrogen fertilizer＞moderate nitrogen fertilizer＞less nitrogen and 1 seedling＞2 seedling＞whole seedling.4.Three factors in this experiment affect the biological yield very obviously. Nitrogen fertilizer's impacts on the yield are the largest,then the stubble height,while the number of seedling the least.There are very obvious differences between the levels of the three factors.The result is:low stubble height＞high stubble height,most nitrogen fertilizer＞moderate nitrogen fertilizer＞less nitrogen fertilizer,whole seedling＞2 seedling＞1 seedling.In addition to environmental factors,Cultivation measures should choose to stay low stubble height,most nitrogen fertilizer and the whole seedling.In this study,the optimal combination is A₁B₃C₃ which the biological yield reach 17000 kg/hm²5.The stubble heigh have no signifcance effect on the quality of stem and leaf; Nitrogen fertilizer dispayed stongly and signifcantly effect on the crude protein content of stem and leaf,respectively.Nitrogen fertilizer it also dispayed the signifcantly effect on crude fat content of both stem and leaf,but no signifcance was found to affect on total sugar of both stem and leaf.The number of seedling dispayed signifcantly effect on the crude protein content as well as crude fat content of both stem and leaf,but no signifcance was found to affect on total sugar of both stem and leaf.Briefly,the crude protein content and crude fat content increases with the amount of nitrogen fertilizer,and decrease with the number of seedling.6.The stubble height dispayed signifcantly effect on the caloric value,while nitro -gen fertilizer and the number of seedling have no signifcance effect on the caloric val -ue.The caloric value of stem in low stubble height was higher than the caloric value in high stubble height;Nitrogen fertilizer was the only factor,which dispalyed the signifcantly effect on the caloric value of leaf.The caloric value of leaf increases with the under limited amount of nitrogen fertilizer,but decreases with the up limited amount of nitrogen fertilizer.The average of the caloric value of stem was 19282 j/g,while les -f was 19282 j/g,indicating that the caloric value of leaf was signifcantly higher than the caloric value of stem.