Barricade除草剂应用于暖季型草坪交播多年生黑麦草建坪的可行性分析

摘要：为了探明华南地区暖季型草坪冬季交播黑麦草（Lolium perenne）建坪杂草防除的措施，本研究采用盆栽试验的方法，利用Barricade除草剂研究暖季型草坪冬季交播黑麦草草坪的杂草防除效果及安全性。结果表明，使用推荐剂量为780~975 g(a.i.)·hm-2，Barricade除草剂对碎米莎草（Cyperus iria）和马唐（Digitaria sanguinalis）有最佳的防效，对香附子（C.rotundus）有比较显著的防效，而对酢浆草（Oxalis corniculata）的防效不理想。Barricade除草剂对暖季型草坪草有较高的安全性，其中，对狗牙根（Cynodon dactylon）和结缕草（Zoysia japonica）的安全性显著，而对成株黑麦草的安全性较差。因此，Barricade除草剂在暖季型草坪冬季交播黑麦草建坪后使用，应在交播黑麦草生长一个月后施用，且建议降低使用剂量。

Feasibility study of Barricade herbicide on warm-season lawn overseeding with ryegrass

This study was to investigate the weed control efficacy and security of Barricade herbicide on warm season lawn overseeding with ryegrass through pot experiment. The results showed that Barricade herbicide as pre emergence herbicide was applied to overseeding warm season lawn with the recommended dose 780~975 g(a.i.)·ha-1. It had a great effect on Digitaria sanguinalis and Cyperus iria, but bad effect on Oxalis corniculata. The warm season lawn was safety with Barricade herbicide but ryegrass was worse. Barricade herbicide was applied on warm season lawn overseeding with ryegrass at more than 30 days after sown with reduced dose.