论文部分内容阅读
采用二次回归正交旋转组合设计,建立了灌水定额、氮肥和磷肥对辣椒保护地土壤速效氮和速效磷的数学模型。研究表明,影响土壤速效氮的主要因子为灌水和施氮,且灌水的影响大于施氮,速效氮与灌水为负相关,而与施氮为正相关;影响土壤速效磷的主要因子为灌水和施磷,且施磷的作用远大于灌水。灌水对土壤速效磷的作用为负效应,而施磷对土壤速效磷的作用为正效应。
By using quadratic regression orthogonal rotation combination design, the mathematical models of soil available nitrogen and available phosphorus in fixed pepper, nitrogen fertilizer and phosphate fertilizer were established. The results showed that the main factors influencing soil available nitrogen were irrigation and nitrogen application, and the effects of irrigation were greater than that of nitrogen application. The available nitrogen was negatively correlated with irrigation but positively correlated with nitrogen application. The main factors affecting soil available phosphorus were irrigation and Phosphorus, and phosphorus is far greater than the role of irrigation. The effect of irrigation on soil available P was negative, and the effect of P on soil available P was positive.