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纵观农业技术发展的历史是人类同大自然斗争过程中实践经验积累的历史，也是单项技术措施逐渐组装应用的历史。单项技术措施应用于农作物上都产生一定的生理效应和产量结果。但是，把各单项技术措施同时应用于同一生产过程中，最终的技术贡献率并非简单的累加关系。技术组装也
Throughout the history of agricultural technology development is the history of the accumulation of practical experience of mankind in the process of struggle with nature, as well as the history of the gradual assembly and application of individual technical measures. Single technical measures applied to crops have a certain physiological effects and yield results. However, when the individual technical measures are applied to the same production process at the same time, the final technical contribution rate is not a simple summation. Technology pack also