3-heteroaryl substituted 5-methyloxymethyl isoxazolines used as herbicides

The present invention relates to 3- heteroaryl of formula (I) substituted aryl isoxazoline or an agriculturally acceptable salt thereof. In the formula, the variables are defined as follows: X representatives containing 1-4 nitrogen atoms or containing 1-3 nitrogen atoms and one oxygen or sulfur atom or a substituted 5-membered heteroaryl contains an oxygen or sulfur atom group, or represents a nitrogen containing 1-4 atoms substituted 6-membered heteroaryl; wherein the five membered heteroaryl is not pyrazolyl or thienyl group; R