Research on Quantitative Evaluation of Remote Sensing and Statistics Based on Wireless Sensors and Farmland Soil Nutrient Variability

Table 6

Comparison table of the percentage of organic matter content in a certain area in three periods.

Organic matter content (%)/time	<10	[10–20)	[20–30)	[30–40]	>40
July 17, 2014	16.523	32.592	31.087	8.958	10.841
November 2, 2019	3.407	6.554	14.056	30.072	45.912
June 16, 2020	6.666	13.304	10.011	40.262	29.756