In this paper, the following problems in numerical integration are studied, best quadrature, best quadrature formulas with weight functions and numerical evaluation of integral defined by Hadamard finite part.

,using orthogonal experiments,we can get the best ratio of its components of the surface mortar,which can improve heat preservation,heat insulation performances,and economize the energy.

5 (the level of over-fertilization), plus zinc sulfate treatment, calculated by the regression equation analysis to identify high,medium, low-level production structure in different fields of nitrogen, phosphorus and potassium the best ratio of performance to maximize production.