| abstract |
The utility model discloses a kind of slow-release urea for killing weed, include multiple urea granules, multiple urea granules is integrated by bonded pelleting, it is wrapped with starch graft acrylic acid sodium water conservation layer, starch graft acrylic acid sodium water conservation layer is wrapped with urea aldehyde slow release layer, urea aldehyde slow release layer is by urea formaldehyde, IBDU, butylene pitches two ureas one or its any mixture is formed, urea aldehyde slow release layer is wrapped with weeding oxidant layer, weeding oxidant layer selects glyphosate, atrazine, chlorotoluron, 10% tribenuron-methyl, prometryn, quinclorac, chlorimuronethyl, one or more mixtures of materials of 50% mefenacet.The utility model, by improving fertilizer structure, can improve nitrogenous fertilizer and efficiency of water application, can eliminate again weeds in field, improves crop yield and quality, increases soil fertility, improve soil, meet service requirements. |