Let's take a look at the main characteristics of reeds. 1. Reeds are born in shallow water or low-humidity areas, and new barley fields or other paddy fields and dry fields are also vulnerable. 2. Reeds have transverse rhizomes. 3. Rhizomes have a strong vitality, can be buried underground for a long time, rhizomes 1 meter or more than 1 meter can still develop into new branches.
Why is it difficult to prevent reeds? There are three main reasons: 1. Fake death. When reed leaves are sprayed, their stems will secrete substances to make the leaves fall off. It is difficult for the medicine to transmit to the roots of the reeds through velocities. After the medicine stems have yellowed for a short time, new shoots will grow from the axillary buds. 2. Cuticle shield. The waxy epidermis of reeds has a waterproof and impervious function. The medicine cannot penetrate into the vascular bundles at all and the medicine is ineffective. 3. Developed root system. Reed rhizome grows in oblique, oblique and horizontal directions, which constitutes a powerful reproductive ability.
So, how can we effectively control the field reeds?
For wheat fields, (1) smear the growth liquid. Use 300 ml of 30% glyphosate solution and 300 ml of water (eg 200 g of glyphosate and 500 ml of water in a 500-gram mineral water bottle) and apply the liquid repellent on the reed leaf. (2) After the wheat stems and leaves spray. When the reed grows to 30-50 centimeters, 200 ml of 41% glyphosate isopropylamine solution is added to each bucket of water (15 kg) and evenly sprayed onto the reed stems and leaves.
For the corn field, besides controlling the reeds in the growing season like the control of the reeds in the wheat field, the spraying of the stems and leaves may be carried out during the growing period and after the harvest of the corn. That is, with the directional spray method, when the reed grows to 30-50 cm, 200 ml of 41% glyphosate isopropylamine solution is added to each bucket of water (15 kg) and sprayed evenly onto the stems and leaves of the reed.
For leaf crops such as rapeseed, soybean, potato, peanut, cotton, and kale, stem and leaf spray control was conducted. At the seedling stage of the crop, choose 10.8% of highly effective flupirtine (Saobuyeng) EC, add 20 to 30 ml of water per barrel (15 kg), or select 35% of fluazifop (Longjing) Emulsifiable concentrates, each barrel of water (15 kg) plus 50 ~ 60 ml, evenly sprayed on the reed stems and leaves. These two agents should be tested in small areas to ensure safety before large-area applications. After the crop is harvested, when the reed grows to 30 to 50 centimeters, add 200 ml of 41% glyphosate isopropylamine solution to each bucket of water (15 kg) and spray it evenly onto the reed stems and leaves.
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