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江口县位于贵州省东部东径108°48′、北纬27°40′处,海拔360米(中部县城一带)至2,2O0米(西南梵净山区),年平均温度16℃以上、最高40℃、最低零下2℃,年降水量1,000毫米以上,年蒸发量700毫米左右,全年无霜期约250天,气候高温多湿,为黔东一带最适宜的水稻栽培地区之一。过去全县稻田常年平均亩产量仅400多斤,主要是迟栽中稻(指5月底至6月中旬栽插的)的面积大、历年螟害严重所造成的,如1957年全县螟害率平均高达18.34％、损失稻谷2,700多万斤。
Jiangkou County is located at 108 ° 48 ’east of Guizhou Province and 27 ° 40’N at the elevation of 360 m (central county area) to 2,200 meters (southwest Fanjingshan District) with an annual average temperature above 16 ℃ and a maximum of 40 ℃ , The lowest minus 2 ℃, the annual rainfall of 1,000 mm or more, the annual evaporation of about 700 mm, the annual frost-free period of about 250 days, the climate is hot and humid, as the Qiandong area one of the most suitable rice cultivation areas. In the past, the average annual mu yield of paddy fields in the county was only 400 kilos, mainly due to the large area of late-planted mid-season rice (which is planted from the end of May to mid June) and the serious damage caused by stem borers over the years. For example, An average of 18.34%, the loss of more than 2700 million kilograms of rice.