石柱土家族自治县黄水坝,有黄连之乡之称,黄连常年种植面积约占全国总面积的40％,产量占全国50％。但由于黄连生长周期长,棚内杂草多,春夏秋因除草争劳力的矛盾十分突出。为解决这一问题,我们做了化除试验,结果表明,西玛津效果最好,平均防效90％。 1、药剂用量。亩用50％西玛津可湿性粉剂300克。 2、施用方法。亩用尿素4公斤或油菜籽5公斤,或混成复合肥6公斤,与药拌和均匀成毒肥,堆 Shizhu Tujia Autonomous County Yellow Dam, known as Coptis town, perennial plantation area accounts for about 40% of the total area, the output of 50% of the country. However, due to the long growth cycle of Coptis, weeds and more shed, spring, summer and autumn because of conflict weeding competing labor is very prominent. In order to solve this problem, we made the addition test, the results show that the Simajin best effect, the average 90% control effect. 1, dosage. Acres 50% Simazine WP 300 grams. 2, the method of application. Mu 4 kg of urea or rapeseed 5 kg, or mixed into 6 kg of compound fertilizer, mixed with drugs into a toxic fertilizer, heap