What herbicide does corn, peanut, soybean ground nutgrass use?

Rhizoma Cyperi, also known as Cyperus, Artemisia angustifolia, Lei Gongtou, etc., is a perennial herb. During the growing period, it can multiply and grow rapidly in a short period of time, occupy the ground quickly, and have a strong ability to compete for fertilizer and water for crops. What kind of herbicide does Rhizoma Cyperi use?

Brief introduction of Rhizoma Cyperi

Rhizoma Cyperi, called "Cyperus" in traditional Chinese medicine, is the dry rhizome of Cyperaceae plant Cyperaceae; its main function is soothing the liver and relieving depression, regulating qi and relieving pain.

But in the field, it is also known by farmers as Trigonium, Lei Gongtou, hairy grass, etc., is a perennial herb, its underground corms produce roots, grow new bulbs, sprout young grass, one after another, continue to grow, in the growth period, can be several times or even dozens of times the number of rapid breeding and growth in a short period of time, quickly occupy the ground, and have a strong ability to compete for fertilizer and water for crops. Therefore, in the eyes of farmers, it is one of the malignant weeds.

Morphological characteristics of Rhizoma Cyperi

Rhizoma Cyperi, also known as Cyperus, Artemisia angustifolia, Lei Gongtou, etc., is a perennial herb, like damp and cool, its underground bulb produces rhizome, the rhizome grows new corm, new corm sprouts young grass, one after another, growing continuously. Leaves linear, as long as culms, ca. 6 mm wide with leaf sheaths, flowers unisexual, monoecious, inflorescences usually 10-15 cm. Spikelets 3-10, male spikelets terminal, female spikelets lateral, heading stage in summer and autumn. During the growing period, it can reproduce and grow rapidly in a short time with several times or even dozens of times, occupy the ground quickly, and have a strong ability to compete for fertilizer and water for crops.

Habitat, harm and Distribution of Rhizoma Cyperi

Rhizoma Cyperi is a weed in autumn ripe dry crop field. It is born in loose soil and occurs seriously in sandy soil, which often occurs in a large number of dry crops in autumn, such as cotton, soybean, sweet potato and so on, which seriously affects the early growth and development of crops, and is also the main weed in fruit, mulberry and tea garden. but the cotton planting area is harmful. Often form a single small community or mixed with other plants to win glory, water and fertilizer, resulting in poor growth of other plants. It is also the host of insects such as white-backed planthopper, black bugs and iron beetles, and is one of the most harmful malignant weeds in the world. Distributed all over the country. Because Rhizoma Cyperi can propagate artificially by underground stem or general herbicides can only destroy the aboveground part, the underground tuber can germinate and continue to harm at any time within a week, so it is extremely difficult to control.

Several crop control methods

1. Corn

Due to the extensive and single use of pre-seedling amide herbicides and post-seedling nicosulfuron herbicides in corn fields for many years, some weeds were artificially selected for growth, and some uncommon broad-leaved weeds and sedges were growing stronger and stronger. Cyperus roxburghii continues to appear in corn fields all over the country, seriously affecting agricultural production.

After the emergence of Cyperus roxburghii in the corn field, chemical control should be used in time, such as 2-methyl-4-chloro-sodium, prednisone, azolidone, flopiosulfuron and so on. Spraying in the period of 4-5 leaves of corn has the least effect on corn.

2. Soybean and peanut

The control methods of Cyperus roxburghii in soybean and peanut fields are basically the same, and the spray control effect is the best when 1-3 compound leaves of soybean seedlings are sprayed with prednisone and fluoxifen. For the serious situation of Rhizoma Cyperi in soybean field, glyphosate spray can be used 7 days before harvest, which can not only control aconite, but also promote soybean defoliation and early maturity, which is beneficial to mechanical harvest. When controlling Cyperus roxburghii in peanut field, trifluorocarboxyfen or ethyl carboxyfluoxane combined with prednisone has a better control effect.

3. Cotton

In recent years, with the widespread application of the new cotton planting technology of plastic film, especially the popularization and application of cotton planting technology of drip irrigation under ultra-wide film, it has created a suitable ecological environment for the reproduction of Rhizoma Cyperi, resulting in the spread and spread of Rhizoma Cyperi in cotton field. Trifluorosulfuron can be used to control cotton at about 25 cm, but in the peak period of cotton growth, Rhizoma Cyperi is mainly propagated by tuber, and the weed density is high, and it can not be sprayed to weed, so glyphosate can be used to make the solution. Artificial brush is applied to the stem and leaf of the adult plant, so that it absorbs and conducts the tuber in the rotten ground and becomes extinct.