The Study Of Nitrogen On Yield And Kernel Oil Percentage In Micro-Endosperm Super High Oil Corn

This experiment carried on in 2005, The first half year carried on the field experiment, This experiment used the randomized block arrangement design. It established nitrogen (N) with four levels (N₁ 0 kg/hm²,N₂120 kg/hm²,N₃ 240 kg/hm²,N₄ 360 kg/hm.2) , with the same level of potassium (K) 300 kg/hm² and phosphorus (270 kg/hm²). There were three replications. To study the effects of nitrogen application on agronomic characteristics, economical characteristics, nutrient elements, kernel structure in micro- endosperm super high oil com. The results were as follows:1. Effects of nitrogen and their interaction application on agronomic characteristics in micro- endosperm super high oil cornWith the increase of the nitrogen fertilizer, plant height, ear height and stem diameter increased significantly, leaf index area increased and the differences among N treatments were significance in the period of maximal leaf index area; dry weight of plant, kernel soluble sugar content, crude protein content of kernel, stem and staminate flower, subtended leaf and leaf sheath increased obviously; leaf growth speed increased; kernel oil percentage increased very significantly; while kernel starch content, leaf photosynthesis rate and ability of resistance to lodging decreased with the increase of nitrogen application.2. Effects of nitrogen and their interaction application on economical...