克无踪与草甘膦调控红壤丘陵果园水土流失的研究

Study on regulating and controlling loss by runoff on red soil hilly orchards by application of gramoxone and glyphosate

丘陵是"山—丘—谷"的过渡地带,生态系统脆弱,一旦植被遭破坏,极易水土流失。在红壤丘陵园地应用除草剂调控水土流失试验结果表明:与传统的清耕法相比,克无踪和草甘膦分别可使地表径流量减少30%和14%,使土壤侵蚀量减少52%和46%,使土壤养分流失量减少47%和17%。除草剂对杂草再生率影响,与生草法比较,克无踪可达67%,草甘膦达30%,清耕法近55%,克无踪分别是草甘膦的2.2倍,清耕法的1.2倍。克无踪调控杂草效果显著。

Hill is a interim belt in mountain hillvalley and its ecological system is very fragile. Once its vegetation on the land is destroyed, the topsoil would be easily washed away. The experimental results of regulating and controlling loss by runoff on the red soil hilly orchards by application of the herbicides indicated that (1) application of gramoxone and glyphosate reduced topsoil runoff amounts and soil erosion amounts by 30% and 14% and, respectively as compared to the clean cultivation; (2) application of gramoxone and glyphosate reduced the nutrient loss through runoff by 47% and 17%, respectively; (3) the aftergrowth rates of weeds for application of gramoxone ,glyphosate , and clean cultivation were 67%, 30%, and 50% of the ones for the sod culture method. Gramoxone is remarkably effective in regulating and controlling weeds on the red soil hilly orchards.