花期线辣椒适宜土壤水分上下限指标研究

Research about the Optimal upper and down Water Content in An-thesis of Capsicum

在盆栽条件下,应用二次回归正交旋转组合试验设计研究了线辣椒开花期适宜的土壤水分下限及灌水上限,并进行了大田经济收入仿真预测。结果表明:灌水上限与土壤水分下限对线辣椒产量有明显的正效应和交互效应,土壤水分下限主效应为灌水上限主效应的2.76倍;线辣椒灌水上限与土壤水分下限效应函数为一报酬递减函数,根据这个效应函数,理论上线辣椒获得最大产量的适宜灌水上限为相当于田间持水量的83.4%,土壤水分下限为相当于田间持水量的55.4%,预测大田条件下产量5585.85 kg/hm2,收入9821.85元/hm2。

Based on the potting experiment, the paper studies the feasible lower limits index of soil moisture and the upper limit index of irrigation and forecast t imitating the economy earning in field by the quadratic rotation-orthogonal regressive combination design. The results show that the positive and interactive effects to capsicum are evident, mean main effect of the lower moisture limit is 2.76 times higher than that of the upper irrigation limit. Effect function of the upper irrigation limit and the lower moisture limit is the decrement function in payment. In this function, when the capsicum yield is biggest, the upper irrigation limit is 83.4 percent and the lower moisture limit is 55, 4 percent of the field capacity, the yield is 5585.85 kilogram and the economy earning is 9821.85 Yuan in a unit of area.