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运用三元二次回归正交组合设计研究N,P,K施用量及其配比对白芷早期抽苔的影响.结果表明:白芷的早期抽苔率与N,P,K的供应密切相关.白芷抽苔率随N,P用量的增加而增加,随K用量的增加而减少.当P,K用量为零水平,N用量为24g/m2,白芷抽苔率最高,达9.7%;当N,K用量为零水平,P用量为10.5g/m2,白芷抽苔率最高为8.5%;N,P用量为零水平,随着K用量增加,白芷抽苔率由10%下降到6.4%.
The effects of N, P and K application rates and their ratios on the early bolting of Angelica dahurica were studied by means of quadratic quadratic regressive orthogonal design. The results showed that the early bolting rate of Angelica dahurica was closely related to the supply of N, P and K. The germination rate of Angelica dahurica increased with the increase of N and P dosage and decreased with the increase of K dosage.When the dosage of P and K was zero level and the dosage of N was 24g / , The dosage of K was zero, the dosage of P was 10.5g / m2, the highest rate of moss and moss was 8.5% and the dosage of N and P was zero. With the increase of K dosage, the germination rate of Angelica dahurica dropped from 10% to 6.4%.