Straw Yield Maps on the Paddy Field

Abstract

In order to control rice growth and make grain yield uniform and high by precision farming, it is necessary to measure and analyze the relationship among growth index of rice plant and grain and straw yields. In this research, the growth of rice plant and the grain and straw yields were measured in the same paddy field during two years. Based on the data, spatial variability of grain and straw yields was analyzed by geostatistical method, and then the straw yield map was made by Kriging. Mean of straw yield was 6.8t/ha and CV was 9.53%. The range that indicates spatial variability was 13m.