为使农民更精确地使用化肥、除草剂、农药和控制灌溉用水量,精心管理耕地,目前在美国农业生产中开始应用化学传感器,大体有以下三种: 一、土壤分析 作物生长的土壤成份是复杂的,加之物质易变化,美国已选择出一些可对耕地土壤性质,进行自动现场测量的传感器。土壤中 In order to enable farmers to use fertilizers, herbicides and pesticides more accurately and to control the amount of water used for irrigation and carefully manage cultivated land, chemical sensors are currently being applied in agricultural production in the United States. Generally, the following three methods are used: 1. Soil analysis The soil composition of crops is Complicated, coupled with material changes, the United States has chosen a number of sensors that can measure the nature of arable land for on-site measurements. Soil