论文部分内容阅读
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，才能获得较高的产量与含糖
In this paper, the results of the 4-factor quadratic universal rotary test on the transplanted sugar beet of paper tube seedling were obfuscated, that is, the fuzzy quantitative synthesis of root yield and sugar content index was first carried out. Then the combined value and density of these two indexes A regression model of the 4 factors on the composite values was established using (x1), N (x2), P2 O5 (x3), K2 O (x4) application rates. The results showed that when the density was 79920 plants / hm2, the amount of fertilizer was N 141.5 / hm2, P2 O5 162.5kg / hm2, K2O 58. 4 kg / hm2, the highest root yield and sugar content were obtained. The results of the correlation analysis between the fuzzy synthetic value and the four factors showed that the order of R1 (density)> R3 (P2O5)> R2 (N)> R4 (K2 O) It shows that the relationship between density and root yield is the closest, followed by phosphorus application. Production should first consider the establishment of a reasonable group structure, and then increase the phosphate fertilizer, so N, P, K fertilizer with a reasonable, in order to obtain higher yields and sugar