氮锌锰与菜用油菜生理指标的数学模型及分析

采用三因子二次通用旋转组合设计，建立并分析了氮、锌、锰与油菜生理指标的数学模型。结果表明，氮、锌、锰施肥水平对油菜生理指标均有影响，适量氮、锌、锰肥配施可显著提高油菜叶绿素含量、硝酸还原酶活性及根系活力，为增加根系对养分的吸收及光合产量的提高和品质的改善创造了条件。

The Establishment and Analysis of Mathematic Model on Relationships betweem N,Zn and Mn Application and Physiological Index of Chinese Cabbage

By means of quadratic rotational combination design, a three-factor(capplication of N, Zn,Mn) pot experiment was conducted in Shanxi Agricultural University. With the aid of computer, several opadratic regression models were eslablished to demonstrate the relationships of physiological indices of Chinese cabbage and N-Zn-Mn application. The results indicated that under the experimental condition,N, Zn and Mn level had diffenent effects on the target characteristics and there existed N-Zn, N-Mn, and Zn-Mn interactions. Combined application of N, Zn and Mn in proper ration signficantly increased the content of chlorophyll, NR and met vitality. Therefore the basic conditions for photosynthetic yield, nutrient absorption and quality improvement were provided.