农业生产中用一定浓度的植物生长素类似物作为除草剂可以除去单子叶农作物田间的双子叶杂草下图表示生长素浓度对两类植物生长的影响则ab曲线 Template




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tomski农业生产中用一定浓度的植物生长素类似物作为除草剂可以除去单子叶农作物田间的双子叶杂草下图表示生长素浓度对两类植物生长的影响则ab曲线 coloring