Effects Of Different Cultivation Factors On Yield And Rice Quality

With living standard rise and population quantity increasing, the request to ricequality and yield is more and more high. At present, because of the ecologicaldisadvantage and top-quality in rapeseed production, further improvement of rapeseedyield and quality is restricted. To study the effects of nitrogeno fertilizer amount,phosphor fertilizer amount,potassic fertilizer amount,silicon fertilizer amount,sowingtime,plant density on rice yield and quality, quadratic regression orthogonal rotationalcombing design with five factors was used to conduct field experiment in two ecologicalzones of Hubei province, one of which is the experimental site of HuaZhongAgricultural University, the other is at Jingshan counties. To analyze the six factorseffects on the yield and quality of rice, the index to yield and meter of quality hascarried out the notable check out, apply the methods including the analysis of principalfactor and interaction analysis the models. The results of optimality selection show that:1. With regard to yield, Different sowing dates shows that: about Exiang 1 andJianzhen 2, different sowing dates have not a notable impact on yield in any conditions,but Ezhong 5, its different sowing dates have extremely notable, and the sowing datesthat about May 10 will notable other sowing dates. Different sowing dates have a notableimpact on rice quality. As the sowing dates proposed, full-gain percentage is declinewhile the grain/straw increasing. Referred to the effect of the milled quality and thesurface on percentage of chalky kernel, it is different among rice varieties.2. The effects of nitrogen fertilizer amount on rice yield is significant, while theeffects of nitrogen fertilizer amount, phosphor fertilizer amount,potassic fertilizeramount,silicon fertilizer amount are not very significant. The relationship between theamount of the nitrogen fertilizer and the milled quality and surface shows that thenitrogen fertilizer amount with the milled quality and the surface have notable positivecorrelation. But the amount of nitrogen fertilizer has no notable relationship with thecooking quality. The amount of the phosphor fertilizer possibility to Milled rice rate orHead milled rice rate, Chalky perentage and Chalkiness have notable effect under thesame breed and soil ambient condition. Think that increasing by, quality are changedinto difference with the fact that the phosphor fertilizer when having effect. Under thesame breed and soil condition, the phosphor fertilizer may be have notable effect toMilled rice rate,Head milled rice rate, Chalky perentage and Chalkiness. Milled rice rateand Head milled rice rate reduce when the phosphor fertilizer increasing. But Chalkyperentage and Chalkiness increasing when the phosphor fertilizer increasing. under this experiment condition, Milled rice rate and Head milled rice rate increasing when thephosphor fertilizer increasing.Chalky perentage in schemes, there is only one schemeshows that can increasing with the potassium increasing.And the potassic fertilizer haveno notable effects on the other rice quality. Synthetical compared, the potassie fertilizercan improve the rice quality. The silicon fertilizer has no notable effects on the ricequality.3. The effect of density on yield is significant or very significant, and the bestdensity is 33—34 Ten thousand caves/hm². Commonly, the relationship between theplant density and the rice quality is not quite notable. The result shows that properplanting density is good for improving the milled quality of the rice.4. The effects of mixing potassie fertilizer with phosphor in different proportion onyield are significant, because of the difference between different equality of the soilfertility and adsorption of different varieties on major elements. So keeping the balance ofpotassic fertilizer and phosphor is help full to get high yield. The correlation effectsbetween the nitrogen fertilizer and the phosphor fertilizer, the nitrogen fertilizer and thesowing dates, the potassic fertilizer and the sowing date, the nitrogen fertilizer and theplant density, the plant density and the sowing dates on grain/straw and full-grainpercentage are significant.5. Synthesize agriculture Measures indicates, the best optimized comprehensiveagronomy measures are recommended to be adapted: applying nitrogen 260 kg/hm²,P₂O₅150-180 kg/hm², K₂O 60 kg/hm². Adding silicon 800-900 kg/hm² and keepingdensity 30-33 Ten thousand caves/hm² will improve the quality and strengthen lodgingresistance.