Effects Of Potassium And Nitrogen On Yield And Kernel Oil Percentage In Micro-Endosperm Super High Oil Corn

This experiment accepted the split plot design. It established the main treatment potassium (K) with two levels ( K₁ 150 kg/hm², K₂ 300 kg/hm²) ,subordinate-treatment nitrogen (N) with four levels (N₁ 0 kg/hm²,,N₂ 120 kg/hm²,N₃ 240 kg/hm²,N₄ 360 kg/hm²) and phosphorus with the same level (270 kg/hm²). There were three replications. To study the effects of potassium, nitrogen and their interaction 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 potassium, 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...