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机构地区:[1]中国农业科学院甜菜研究所,黑龙江呼兰150501 [2]黑龙江省经济作物指导站,黑龙江哈尔滨150036
出 处:《中国糖料》1999年第3期12-15,共4页Sugar Crops of China
摘 要:本文对纸筒育苗移栽甜菜的4 因素二次通用旋转试验设计结果进行了模糊处理, 即首先对根产量和含糖率指标进行了模糊量化合成, 再以上述两个指标的合成值与密度( x1) 、N( x2) 、P2 O5( x3) 、K2 O( x4) 施用量建立4 因素对合成值的回归模型。对模型寻优结果表明,当密度在79920 株/hm2 ,施肥量分别为N 141.5/hm2 、P2 O5 162.5kg/hm2 、K2O 58 .4kg/hm2 时可获最高的根产量和含糖;模糊合成值与4 因素关联度分析结果表明,其顺序为R1( 密度) > R3(P2O5) > R2( N) > R4(K2 O) ,说明密度与根产量关系最为密切, 其次为施磷肥量。生产上应首先考虑建立一个合理的群体结构,然后增施磷肥,做到N、P、K 肥合理搭配。The results were treated with blurred analysis by 4 factors and quadratic current spin design,lst give quantity composition on the index of root yield and sugar content, and then the composition value used to population (x1),application amount of N(x2),P2O5(x3),K2O(x4) and got the regression model,the best results shown that the highest root yield and sugar contet harvest with population 79920 plants/ha,amount of fertilizer applied:N 141.5kg/ha,P2O5 162.5kg/ha, K2O 58.4kg/ha, the result of connecting degree shown that which analysed by the blurred composition value with 4 factors, the order is that:R1(population)>R3 (P2O5)>R2 (N)>R4(K2O)which shown that the population and root yield have the closest relationship, the 2nd is amount of phosphate fertilizer applied.In the sugarbeet production, lst considered that the good structure have set up and the more P fertilizer added,adequate fertilizer to got the highest root yield and sugar content.
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