摘要
为筛选出阔极(苯·唑·2甲钠)防除‘阿坝’硬秆仲彬草(Kengyilia rigidulacv.Aba)田间阔叶杂草的最佳施药方案,试验设置300、600、900、1 200、1 500 g/hm25组不同施药处理,观察阔极对‘阿坝’硬秆仲彬草田间阔叶杂草的株防效、鲜质量防效以及硬秆仲彬草药害。结果表明,阔极对阿坝硬秆仲彬草种子田间常见阔叶杂草细果角茴香(Hypecoumleptocarpum)、荠(Capsellabursa-pastoris)、珠芽蓼(Polygonumviviparum)、灰绿藜(Chenop-odiumglaucum)等防除效果显著,但对香薷(Elsholtzia ciliate)、老鹳草(Geranium wilfordii)防除效果较差。900、1 200和1 500 g/hm2阔极对阔叶杂草株防效分别达到76.1%、87.4%和94.6%,鲜质量总防效分别达到76.5%、85.2%和90.2%。1 500 g/hm2阔极对硬秆仲彬草种苗产生药害影响。综合考虑施药安全性并结合防治成本最小化的原则,确定阔极1 200 g/hm2为硬秆仲彬草三叶期阔叶杂草最佳处理方案。
The different dose kuoji with 300, 600, 900, 1 200 and 1 500 g/hm^2 was used to treat broadleaf weeds in seed field of Kngyilia rigidula for determining the best scheme by measuring stem harmfulness and fresh weight of weeds and harmfulness of K. rigidula. The results of this study showed that Kouji effectively control Hypecoum leptocarpum , Capsella bursa-pastoris , Polygonum viviparum , Chenopodium glaucum but did not affect Elsholtzia ciliate and Geranium wilfordi in the seed field of K. rigidula. The dose of 900, 1 200, and 1 500 g Kuoji per hectare control stem harmfulness with 76. 1%, 87.4% and 85.2%, and control fresh weight with 76.5%, 85.2% and 90.2%. 1 500 g Kuoji harmed the leaves and stems of K. rigidula. This study suggested that the 1 200 g/hm^2 kuoji was the best group to control the broadleaf weeds in the seed field of K. rigidula in the view of safety.
出处
《草业科学》
CAS
CSCD
北大核心
2011年第1期162-165,共4页
Pratacultural Science
基金
国家牧草产业技术体系牧区草地优化岗位资助
