The intestine, also known as moth grass, dry lotus grass, and hemostatic grass, is an annual herb of the Asteraceae family. Snakehead intestines born in rice, soybean, sweet potato and other crop fields is a weed, will compete with crops for light, nutrients, etc., the harm is more serious, in some areas of the rice field fish intestine population is very large, has become a malignant weed. The intestines can be used as feed for cattle and pigs, which is currently used very little; it is also a traditional Chinese herbal medicine, whole herbs into medicine, with astringent, hemostasis, pus drainage and other effects, so it is named "hemostatic herb". This article mainly introduces the occurrence characteristics and prevention measures of rice field weeds and intestines, for reference only.
<h1 class="pgc-h-arrow-right" data-track="2" >1</h1>
Identification points: the stem of the intestine is erect or creeping, the base is multi-branched, the lower part is lying down, and the nodes are rooted. The leaves are opposite, lanceolate in oval shape, fully margined or slightly toothed, tapering and sessile at the base, and covered with rough hairs on both sides. The cephalic inflorescence has a stem, 5-6 layers of total bracts, green, indistinguishment; the outer flower tongue is white; the central flower tube is tubular, 4 lobed, yellow. The fruit (seed) is dark brown, about 3 mm long and 1.5 mm wide, and the fruit shows a pronounced small nodular protrusion without crown hairs.
Occurrence characteristics: The intestines propagate through seeds, in the Yangtze River Basin area, seedlings emerge in April-June, flower and bear fruit in July-August, and fruits gradually ripen in August-November, falling in nearby soil or mixed in organic fertilizers to spread to farmland. The intestines like humid environment, drought tolerance is strong, salt resistance to barrenness, shade tolerance, in the past soybeans, sweet potatoes and other dry land occurred more, with the rice direct broadcast, machine cuttings and other light simplified cultivation of the popularity, straw returned to the field year after year, weed seeds with the straw returned to the field, direct rice field and machine rice field with height difference have occurred. In general, the number of dry direct field occurrence is more than that of water direct field, and the number of water direct field occurrence is more than that of machine insertion and planting. The intestines of the fish have a strong reproductive capacity, each plant can bear thousands of seeds, and in some areas the population of the intestines is very large and common.
<h1 class="pgc-h-arrow-right" data-track="2" >2</h1>
At present, the use of rice field herbicides is mainly used for rice field weed control, and the intestines are weeds of the Asteraceae family, which can be classified as broad-leaved weeds. The rice field herbicides that have a control effect on broad-leaved weeds include alfalonylfuron, pyrimidon, sodium dimethyltetrachloride or dimethyltetrachlorodimethylamine salt, herbicone, chlorofluoropyoxyacetic acid and its compounding, etc., and pentafluorosulfonamide and chlorofluoropyridine ester have a good anti-effect on some broad-leaved weeds.
If there is a carp intestine occurrence in the rice field in previous years, after the rice seeding, butyrol, sulfolon and pyrazonosulfuron can be used for closed treatment. Considering that in some areas, the intestines have strong resistance to sulfonylurea herbicides such as benzylsulfuron and pyrimidinesulfuron, it is possible that the intestines may still occur in the later stages. During the growing stage of rice, cloropyroxyacetic acid, 2methyl chloride can be selected from 4 leaves to jointing. Drugs such as herbionic pine can be removed, combined with barnyard grass, etc., with pentafluorosulfonamide is also effective, and the appropriate use of Lingsko (chlorofluoropyridyl ester) can also effectively remove this grass.
Yunzhongdi service purpose: science planting technology knowledge, to solve the problem of farmers planting. More planting technology knowledge, welcome to pay attention to 【Yunzhongdi】