(四)农业系统的整体性原则 农业系统论认为,在农业生产中,任何领域,任何部门,任何工作都必须掌握农业系统的控体性,亦就是说必须全面地考虑农业生物、环境、技术、经济这四个方面及其互相结合所构成的整体。这样所制定的农业决策才可能是正确的,才能促进农业较顺利和较迅速地发展。农业系统的整体性的第一个法则是“缺一不可”。忽略农业系统中四个方面的任何一个方面,所制定的农业决策或工作计划必然是 (D) the integrity of the agricultural system principles Agricultural system theory that in agricultural production, any field, any department, any work must grasp the control of the agricultural system, which means that we must fully consider the agricultural biology, environment, technology , Economy and the four aspects of the combination of each other as a whole. Only by doing so can the agricultural decision-making be correct in order to promote the smooth and rapid development of agriculture. The first law of the integrity of the agricultural system is “indispensable.” Ignoring any of the four aspects of the agricultural system, the agricultural decision or work plan that is set must be