However, the structure adjustment and system optimization should be based on the integral understanding of the agricultural production system, and its regularity of systematic structural evolution.
农业结构的调整，必须建立在对系统整体认识的基础上，必须符合系统结构本身的演变规律。
Adjust structure of animal husbandry, change agricultural fat input amount waits, can improve the systematic material flow situation effectively, Make the system turn towards benign cycle.
而调整畜牧业的结构，改变农肥的投入量等，可以有效地改善系统的物流情况，使系统向良性循环。
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