The yield of maize mainly depends on the number of ears per mu, the number of grains per ear and the 1000-grain weight. Generally speaking, within a certain range, the yield of corn will increase with the increase of the thickness of the pole, but when the pole is thick enough, its yield will decrease. This is because too thick poles will consume too much nutrients, which will reduce the number of grains per ear and the 1000-grain weight of corn, thus affecting the yield.
In addition, the thickness of the pole will also affect the lodging resistance and pest resistance of corn plants. If the pole is too thin, it may cause plants to lodging easily and be vulnerable to pests and diseases, thus affecting the yield.
Therefore, when selecting corn varieties, we must comprehensively consider the characteristics of varieties, local soil conditions, climate conditions and other factors to select the most suitable corn varieties in order to obtain the best yield.