晚稻生长简化模拟研究

STUDY OF A SIMPLIFIED MODEL FOR THE GROWTH OF LATE RICE

截至目前为止,国内外所开展的各种农作物生长模拟研究和建立的模拟模式,均因所需特殊观测资料较多,参数计算较繁,致未能投入气象业务部门使用。本文从我国气象部门的实际情况出发,取自然候为时间步长,选择易于获得的常规气象观测资料,按照生物学,作物生理学和农业气象学的有关理论,以农作物光合、呼吸和同化物分配转移等生理过程为依据,通过田间试验和计算机赋值模拟,构造了晚稻生长简化模式,效果较好,可供广大基层气象台站服务应用。

Up to the present, neither the studies carried out nor the models developed athome or abroad for simulating the growth of various crops have made a breakthrough orcould be put into operation by the meteorological services. This is because special obser-vational data are required and complicated parameters have to be calculated. In this pa-per, based on the crop physiological and agrometeorological theories and consideringcrop photosynthesis, respiration and allotment of assimilated products, a simplifiedmodel is presented for the growth of late rice. In this model only conventional meteoro-logical data are needed with the pentad as the length of time-step. The model has goodsimulation results and can be widely used in the ??