除草剂不同施用时期对杂草数量及苦参产量的影响

为解决中药材种植过程中的除草难问题,开展了苦参育苗田除草剂应用效果试验,研究除草剂不同施用时期对苦参育苗田杂草数量、苦参根条数及产量的影响。结果表明,除草剂的施用显著降低了农田杂草数量,播种后出苗前喷施除草剂和出苗后喷施除草剂杂草分别较清水对照减少了79%和87%;出苗后喷施除草剂苦参根条数量较出苗前喷施除草剂以及清水对照显著减少。参照大田人工除草后,播种后出苗前喷施除草剂处理苦参苗鲜货产量显著高于清水对照;苗后喷施除草剂处理苦参根条单重显著高于播种后出苗前喷施除草剂处理和清水对照,而苦参苗鲜货产量则明显低于二者。因此,除草剂应选择在苦参播种后出苗前施用,效果最佳。

The Effects of different periods of herbicide application on the number of weed and the yield of Sophora

The herbicide experiment of Sophora seedling cultivation field was carried out to studying the effect of different application periods of herbicide on the number of weeds, the number of roots and the yield of Sophora seedling cultivation field, so as to solve the difficult problem of weeding in the planting process of traditional Chinese medicine.The results showed that the application of herbicide reduced significantly the number of weeds in the field. Compared with the control group, spraying herbicide before sowing and spraying herbicide after sowing reduced the number of weeds by 79% and 87%. The number of Sophora roots sprayed with herbicide after seedling emergence was lower significantly than that before seedling emergence and control treatment. After artificial weeding in the field, the fresh cargo yield of Sophora seedlings treated with herbicide before seedling emergence after sowing was higher significantly than that of control treatment. The single weight of Sophora root treated by spraying herbicide after seedling was higher significantly than that treated by spraying herbicide before seedling emergence and the control, while the fresh product yield of Sophora seedling was lower significantly than that of the former two. Therefore, the herbicide should be applied best after sowing and before seedling emergence.