Growing degree-days requirements for plant and leaf development of summer maize(Zea mays)-An experimental and simulation study

Abstract

Abstract: A growing degree-day(GDD)calculation method was recommended by comparing several popular used GDD calculation equations. The GDD between different development stages, from emergence to each leaf appearance and during the lifetime of each leaf,were calculated for summer maize with the field treatments differed in cultivars, plant density, sowing dates, water and fertilizer supplying levels. Factors influencing the stability of GDD were discussed,and simulation equations to predict the leaf development were fitted based on the field observed data.

Key words: Zea mays, Development, Leaf, Growing degree-days, Simulation

CLC Number:

Q147
S513

ZHANG Yinsuo, YU Zhenrong, P. M. Driessen. Growing degree-days requirements for plant and leaf development of summer maize(Zea mays)-An experimental and simulation study[J]. Chinese Journal of Applied Ecology, 2001, (4): 561-565.

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