| Parameters of maize canopy structure and photosynthetic effective radiation in different canopy height
at different measured times were studied to reveal the mechanism of yield increasing under oriented planting pattern.
The compact type maize Xianyu 335 and semi-compact type maize Jidan 50 were grown under oriented seeding,
random seeding, oriented transplanting and random transplanting to research the photosynthetic utility and light
distribution under diverse planting patterns. The results indicated that there were differences between leaf vertical
distribution proportions of the two maize varieties at tasseling time, which didn't change alone with the planting
pattern. In the morning (10:00-10:15), the rate of light capture increased by 10.6% and 23.5% under orientation
seeding pattern and transplanting pattern. Photosynthetic active radiations fell faster in the central of the group from
2 m to 1 m under oriented patterns than those under the random patterns and at the same time, it could guarantee a
certain light transmittance at the bottom of the group in oriented patterns. In the case of convenient mechanical
condition, oriented planting pattern can establish reasonable and effective canopy to use light. It will provide a new
way for the high yield cultivation of maiz |
