桑园除草慎用双黄隆用双黄隆防治桑园杂草，一定要掌握好用药量和用药时间。否则桑树生长受抑制，不露芽或叶片小、新技短，造成一季桑叶无收。正确方法：６６６．７米２用１０％双黄隆２．５克加１０％草甘膦２５０毫升，兑水４５公斤拌匀喷雾，防效可达１００％。以冬季... Ssangyong weeding caution Shuanglong use Shuanglong to prevent mulberry weeds, be sure to master the dosage and medication time. Otherwise, mulberry growth inhibition, no buds or leaves small, short technique, resulting in a quarter mulberry leaves confiscated. The correct method: 666.7 m 2 with 10% Shuanghuanlong 2.5 g plus 10% glyphosate 250 ml, watered 45 kg mix spray, control up to 100%. In winter ...