Herbicide used for stevia rebaudiana plantation and preparation method thereof

Abstract

The invention relates to the technical field of agriculture plantation, and concretely relates to a herbicide used for stevia rebaudiana plantation and a preparation method thereof. The herbicide comprises the following components: Setaria viridis, aconitum sinomontanum nakai, euphorbia, artemisia argyi, bidens pilosa, euphorbia helioscopia, golden larch bark, angled bittersweet, tripterygium wilfordii, radix sophorae flavescentis and rheum officinale; the preparation method comprises the following steps: respectively weighing the components, crushing the components, uniformly mixing the components; adding the components in a soxhlet extractor, adding ethanol, performing ultrasonic-assisted extraction, taking the mixing components to obtain an extract; placing the mixing components in a flask, adding water, performing ultrasonic-assisted heat backflow, filtering the material while hot, repetitively operating for 2 times; merging the obtained extract, a filtrate and a washing lotion, and concentrating the materials to obtain the target product herbicide. The herbicide used for stevia rebaudiana plantation can effectively remove the weeds, and can inhibit germination of weed seeds, and the preparation method is simple, operation is convenient, and the method is suitable for popularization and application.

Description

technical field

[0001] The invention relates to the technical field of agricultural planting, in particular to a herbicide for planting stevia rebaudiana and a preparation method thereof. Background technique

[0002] Stevia is a perennial herbaceous plant of Compositae, native to subtropical South America. The roots, stems and leaves of Stevia rebaudiana contain steviol glycosides. Stevioside has the characteristics of high sweetness (200-300 times that of sucrose), low calorie (only 1 / 300 of sucrose), and can increase blood sugar, lower blood pressure, and promote metabolism. Heart disease, dental caries, etc. have a certain auxiliary effect, so it has increasingly attracted people's attention and attention, and has become the "third sugar source" after sucrose and synthetic sugar.

[0003] The planting area of ​​stevia is also expanding, and the supply exceeds the demand. Stevia products are widely used in medicine and food additive industries. At present, stevia leav...