小杂粮田化学除草技术研究

随着市场经济的发展和膳食结构的改善，绿豆、赤豆、荞麦等小杂粮作物的需求和播种面积逐渐增加。本研究采用随机区组设计方法研究了绿豆、赤豆和荞麦田化学除草技术。结果表明，在土壤水分适宜、药剂层不被破坏的情况下，速收与禾耐斯单用或混用于播后苗前土壤处理，均取得极显著防效。绿豆、赤豆田单用５０％速收９０—１５９ｇ／ｈａ对阔叶杂草防效可达８８．５％以上，对禾本科杂草也有显著抑制作用；单用９０％禾耐斯９００—１３５０ｍｌ／ｈａ对禾本科杂草防效可达９０％以上，对一年生阔叶杂草也有显著防效；速收７５ｇ／ｈａ左右＋禾耐斯６７５ｍｌ／ｈａ左右混用可获得显著而稳定广谱的除草效果。荞麦田单用速收９０—１３５ｇ／ｈａ、或禾耐斯９００－１３５０ｍｌ／ｈａ对常见一年生杂草都可获得显著防效。二者减量混用可提高防效、扩大杀草谱。在试验推荐剂量下对绿豆、赤豆、荞麦及后作均高度安全。

Studies on Techniques of Weed Chemical Control in Mung Bean,Red Bean,Buck Wheat Fields

With the development of market economy and improving of diet component,more coarse cereals were needed,such as buckwheat ( Fagopyrum esculentum Moench),mung bean ( Phaseolus radiatus l.),red bean ( Phaseolus angularis Wight) and their sown areas are increasing.This experiment was conducted to study the techniques of weed chemical control in buckwheat,mung bean and red bean fields.The experimental design was in a randomized block with 3￣4 applications.The results showed that:on the condition of normal soul moisture and no destroyed sprayer layer,Sumisoya,Harness and the mixture and no destroyed sprayer layer,Sumisoya,Harness and the mixture of them were applied respectively after sowing and before emergence,all of the weed control effects were very significant.With 90 150g/ha of 50% Sumisoya,more than 88 5% of the broadleaf weeds were controlled in the mung bean,red bean fields,grass weeds also were restrained.With 900 1350ml/ha of 90% Harness,more than 90% of the grass weeds were controled,annual broadleaf weeds were obviously controlled.With the mixture of 75g/ha Sumisoya and 675ml/ha Harness ,the weed control effects were significant,steady and wider.The effects to control common annual weeds was significant by applying 90-135g/ha Sumisoya or 900-1350ml/ha Harness in the buckwheat fields.If the mixture of them was applied,the control effects were more significant,the weed control spectra were wider.Mung bean,red bean,buckwheat and their postcrop were highly safe at the rang of the recommended dose in our experiment.