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回归正交法是一种数理统计的方法。它一方面具有正交试验法的“正交性”这一特点,可以在正交表上安排较少的试验次数,达到较好的试验效果;另一方面利用回归分析法中应用最小二乘法原理,使得因素与指标之间能建立经验公式。因此,这种方法的运用正引起国内外的注意,为正确采用灌溉指标,以充分发挥滴灌的增产省水潜力,1979年春,我所在北京市四季青公社的玻璃钢温室内,运用此法对西红柿的滴灌指标开展试验,效果良好。
Regression Orthogonal Method is a mathematical statistics method. On the one hand, it has the “orthogonality” of the orthogonal test method, which can arrange fewer test times in the orthogonal test table and achieve better test results. On the other hand, by using the least square method Principle, making the factors and indicators can establish empirical formula. Therefore, the application of this method is drawing the attention both at home and abroad. In order to make full use of the irrigation potential to increase the yield potential of drip irrigation, in the spring of 1979, in our glass fiber reinforced plastic greenhouse of Sijiqing Commune in Beijing, Drip irrigation indicators to carry out the test, the effect is good.