Effects Of Soil Leakage And Straw Returned To Field On Yield And Quality Of Rice

For clear straw returned and leakage of Ken jian rice yield and quality, the effect of5inheilongjiang August first land reclamation university in2014, the two factor randomized blockdesign, experimental study in order to provide technical support for the leakage of different soilstraw counters-field amount. The main results were as follows:1. Can increase rice straw counters-field tiller earing rate, the biggest increase in more than7%;2. The soil seepage can reduce growth period leaf nitrogen content; Full panicle stage nostraw counters-field processing of transpiration rate, stomatal conductance, intercellular CO2concentration were more straw returned7500kg/hm2nitrogen increasing96.99kg/hm2high35.85%,46.54%,19.05%, have reached the extremely significant level.3. Straw returned can reduce plant tissue of sucrose, fructose, soluble sugar content; Nostraw counters-field sugar flowers than a straw returned3750kg/hm2, respectively12.62%,21.41%higher than that of7500kg/hm2, and both reached extremely significant level. Noleakage processing sugar flowers than13.81%higher than that of the leakage, leakage of strong,respectively,13.81%, and the difference reached significant level.4.To96.99Kg/hm2leakage and increase nitrogen urea can decrease the root activity of rice;Tillering stage, full panicle stage, filling stage, mature stage straw returned3750kg/hm2,7500kg/hm2soil REDOX potential were significantly higher than that of no straw counters-fieldprocessing, by up to3.23%.5. Straw returned can reduce the soil PH value, straw returned after two periods PH largestdecline reached1.56%;6. Straw returned7500kg/hm2nitrogen increasing96.99Kg/hm2can make ear lengthincreases by9.71%; Straw returned will increase rice secondary branch number,3750kg/hm2,7500kg/hm23three parts are no straw counters-field treatment increased by25.02%and45.00%, respectively,25.02%and35.56%,89.20%and110.67%; Straw returned3750kg/hm2,7500kg/hm2the holes of the panicle number respectively is12.05%,18.25%higher than that ofwithout straw returned. No straw counters-field grain is8.86%higher than that of3750kg/hm2,difference reached significant level; Leakage and straw counters-field coupling condition, thestrong leakage processing of7500kg/hm2nitrogen increasing96.99Kg/hm2yield the highest.7. Straw returned after the grinding quality and nutritional quality of rice has no obviouschange; Straw returned3750kg/hm2,7500kg/hm2rate (chalky rice percentage and chalk whitedegree less straw returned by34.19%and38.98%,41.88%and46.32%; Leakage and leakage rate (chalky rice percentage and chalk white degree of the leakage was reduced by41.92%and41.92%respectively,37.20%and41.71%; Seepage and seepage treatment of straw returned3750kg/hm2,7500kg/hm2,7500Kg/hm2nitrogen increasing96.99kg/hm2can improve ricegrading, of which3750Kg/hm2qualitative effect is best, less straw returned2.02%,2.02%respectively.