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Occurrence and harm of the weedy rice increased year by year, south China, east China and northeast was spread in our country, the situation. S $author studied in shaoyang county creek city township village of the weedy rice was the first discovery of morphological characteristics and control methods, obtained the following results: first, the weedy rice found in the weedy rice indica type, from the form is divided into two types. Through field survey, adopting the analyzing method, the weed seeds with rice comes from farmers buy to the possibility is very large. Second, systematic observation of the pastureland of seedbed weed species and dominant species with legacy dating back to rice growth. Weed species and communities in the four samples to a minimum area of contrast analysis, reflected by a single to conversion of farmland weeds ecosystem of farmland ecosystem. Legacy in the change process in rice seedling bed day after day, year after year to compete, improve resistance, increase the "wild". Concluded that the long, will produce the cultivated rice becomes the weedy rice. Third, the stream of the weedy rice, rural village of s $to mild, has not yet spread. From more promotion, first of all to the local cadres, the agricultural extension personnel, schiscosomiasis villagers to popularize knowledge of the weedy rice, face up to the existence of the weedy rice. Weeds organization villagers rice and burned, cleaning, planting and pastureland field soil, prevention of weedy rice.
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