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本文借助作物生长计算机模型与模糊数学的方法对江苏省丹阳市两种种植制度的气候、土壤生产潜力进行了初步研究。结果表明,模拟的小麦/玉米—晚稻种植制度的气候潜力比小麦一单季稻高3000kg/ha左右。玉米的气候产量受降水量的年际变化影响较大。当土壤排水良好时,小麦的气候产量受降水量的影响较小。占丹阳市水稻土类80％面积的三种水稻土属的自然生产潜力在种植小麦—单季稻两熟时基本上为13510.5kg/ha。小麦施肥的最高产量约占土壤自然生产潜力的70.6％;而单季稻施肥最高产量则接近模拟的气候潜力。在丹阳市小麦应以提高土壤自然生产潜力为主。而单季稻应以提高品种的气候潜力为方向。
In this paper, the climatic and soil productivity potentials of two cropping systems in Danyang City, Jiangsu Province are studied with the help of computer simulation of crop growth and fuzzy mathematics. The results showed that the climatic potential of simulated wheat / maize-late rice planting system was about 3000 kg / ha higher than that of single-season rice. The climatic production of maize is greatly affected by the interannual variation of precipitation. When soil drainage is good, the climate output of wheat is less affected by precipitation. The natural productivity potential of three paddy-soils, which account for 80% of the paddy soil in Danyang City, is essentially 13510.5kg / ha when planted with wheat-two-crop single-crop rice. The highest yield of wheat fertilization accounts for about 70.6% of the natural production potential of the soil, while the highest yield of single-crop fertilization is close to the simulated climatic potential. In Danyang City, wheat should be mainly to increase the potential of natural production of soil. The single crop of rice should be to improve the climate potential of varieties as the direction.