论文部分内容阅读
近年来,棉花叶面喷肥已经大面积推广应用,国内外也有不少研究报导,但多为单一的营养元素喷施,对于多营养元素的混合应用报导甚少。而各营养元素间存在一定的拮抗和促进作用,因此,研究多种营养元素的混合应用,克服单独使用某一元素的不足,对于提高棉花产量将有很大的意义。本试验的目的在于通过多种营养元素的混合使用,筛选出最佳的配比组合,为棉花生产提供增产增收的科学方法。材料与方法 1976～1983年我们先后在商丘农校、许昌、西华进行了多年多种喷肥方式的试验。多元素多浓度的配合试验采取三因素二水平L_8(2~7)正交设计。(见表1)。
In recent years, cotton foliar fertilizer has been widely applied, there are many reports at home and abroad, but more than a single spraying of nutrients, mixed application of multiple nutrients reported very little. However, there is a certain antagonism and promotion effect between the various nutrient elements. Therefore, it is of great significance to study the mixed application of multiple nutrients to overcome the deficiencies of using only one element alone. The purpose of this experiment is to scientifically select the best combinations of nutrients by using a variety of nutrient elements to provide a scientific method for increasing cotton yield. Materials and Methods From 1976 to 1983, we successively conducted many kinds of experiments on fertilizer methods for many years in Shangqiu Agricultural School, Xuchang and Xihua. Multi-element and multi-concentration test with three factors and two levels of L_8 (2 ~ 7) orthogonal design. (See table 1).