AGRICULTURAL METHOD OF FILTERING AND REMOVING WEED IN IRRIGATION OF RICE FARMING BY USING FILTER CAPABLE OF UTILIZING FILTRATION METHOD TAKING ADVANTAGE OF WASHING AWAY OF FILTER CAKE BY SOLID-LIQUID MIXTURE

摘要

PROBLEM TO BE SOLVED: To provide a weed removing method in irrigation for filtering off and removing weeds which flow in together with water in irrigation in rice farming being an agriculture requiring irrigation such as rice farming in which in the case of conventional weeding method, a herbicide is used and the conventional weeding method has not a little influence on organisms except weeds in the natural world so that the influence is reduced. SOLUTION: Weeds are filtered off in irrigation by using a filter capable of utilizing a filtration method taking advantage of washing away of filter cake by a solid-liquid mixture and by making weeds flowing in during irrigation together with water not flow in.