Study on the mathematical model of the effects of NPK on winter cauliflower

文献类型： 外文期刊

第一作者： Li, Guangqing

作者： Li, Guangqing;Xie, Zhujie;Yao, Xueqin;Chen, Xuehao

作者机构：

关键词： Cauliflower;Balanced fertilization;Glucosinolates;Mathematical model

期刊名称：MATHEMATICAL AND COMPUTER MODELLING （ 影响因子：1.366； 五年影响因子：1.602 ）

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年卷期：

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收录情况： SCI

摘要： In order to study the effects of nitrogen (N), phosphorus (P) and potassium (K) on the yield, the appearance eligibility ratio and the contents of total glucosinolates and glucoraphanin of cauliflower, the 311-A optimization regression design was used to conduct field experiments of N, P, K fertilizer treatments using winter cauliflower variety "HB16". The models of the balanced application for N, P and K fertilizers were set up. According to the different production targets, the different optimal combinations of applying NPK fertilizers could be carried out. The results showed that the optimal combination of applying fertilizer was 372.83 kg/hm~2 N, 89.65 kg/hm~2 P_2O_5 and 201.41 kg/hm~2 K_2O, the highest yield was 19089.25 kg/hm~2. When the optimal combination of applying fertilizers was 434.20 kg/hm~2 N, 90.11 kg/hm~2 P_2O_5, 213.92 kg/hm~2 K_2O, the eligibility products ratio could reach the highest at 84.95%. It was found that there were significant effects on the contents of total glucosinolates and glucoraphanin by applying N fertilizer, but not by P and K fertilizers. When N fertilizer application reached 408.78 kg/hm~2 and 394.62 kg/hm~2, total glucosinolates and glucoraphanin content would get to maximum, respectively.

分类号： O14

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