烤烟综合施肥措施的研究

本试验采用二次回归正交旋转组合设计方法，对优质烤烟综合施肥措施进行了研究。结果表明：（１）．磷素、钾素、有机肥、氮肥４因素对烤烟产值有明显影响；（２）．通过计算机寻出了烤烟亩产值５００元以上的综合施肥方案；（３）．磷肥与钾肥、氮肥与磷肥交互作用显著。

A STUDY ON THE METHOD OF COMPREHENSIVE APPLICATION OF FERTILEZERS TO TOBACCO

We have studied the method of comprehensive application of fertiliaers to flue-cured super tobacco with the square-regression orthogonolo gyrating design. Our resrlts have given us following suggestions:(1) under the ecological condition in Hongbei area of Xichang, the effect order of the fertilizers appkied to tobacco arranging like this: phosphorus>potassium>organic >nitrogenous>trace; our experiments and production experiences have sown that the key method of increasing the output value of tobacco is controlling nitrogenous, increasing phosphorus and potassium, supplementing manure and rationa distributing nitrogenous, phosphorus and potassirm. (2) the comprehensive application of fertilizers to tobacco yielding the output value of 500 Yuan per mu has a proper range of quantity.(3)there exist obvious interactions between phosphorus and potassium, nitrogenous and phosphorus.