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以宁夏农业生产的实际为例,探讨了农田投能的合理性,并从农田生态系统的地域分异,分区分析了各农田生态系统能量的投入产出,分别建立数学模拟模型,求出各区农田生态系统的合理投能量与合理投能结构。从现实的农田投能行为看,宁夏农田投能中存在的主要问题是投能量严重不足与投能结构不合理。为此,宁夏平原区在继续增加投能过程中应加强有机能(尤其是有机肥料能)投入;宁中、宁南两区则应大力增加肥料能投入,尤其是化肥投入;投能战略布局的重点应继续向宁夏平原区倾斜。
Taking the practice of agricultural production in Ningxia as an example, the rationality of farmland energy input was discussed and the input and output of each farmland ecosystem energy was analyzed from the regional differences of farmland ecosystem. The mathematical simulation models were established respectively, Rational Investment Capacity and Reasonable Investment Structure of Farmland Ecosystem. Judging from the actual behavior of farmland investment, the main problems in farmland investment in Ningxia are the serious shortage of investment and unreasonable investment structure. For this reason, Ningxia Plain Region should increase its investment in organic (especially organic fertilizer) inputs while continuing to increase its investment capacity. Ningzhong and Ningnan should increase their input in fertilizers, especially for chemical fertilizers; The focus should continue to tilt Ningxia plain area.