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龙陵县勐冒公社勐冒大队是丘陵山区的一个小坝子,海拔1887公尺。气候低温多雨,年平均温13.8℃,年雨量2000多公厘,霜期长150多天,土壤主要有红黄壤和泥炭土两个类型。泥炭土虽含有机质较高(据分析,一般为7～15％),但速效养分缺乏,酸度高,肥力很低,因此,大部份土壤都十分瘠薄。过去,由于气候和地形条件的影响,这里的稻田土壤中,分布着大量的低湿冷浸田,有的终年积水,泥脚很深,陷牛陷人,当地叫“烂坝田”;有的虽然冬季不积水,但土壤晒不干,当地称“水心田”;还有些梯田,到冬季,半边湿,半边干,当地称半边田,这些低湿冷浸田,不但小春种不上,
Longling Meng Meng commune Mengmai brigade is a small mountain hilly area, 1887 meters above sea level. The climate is cold and rainy, with an annual average temperature of 13.8 ℃, annual rainfall of more than 2000 mm and frost-period of more than 150 days. There are two types of soil, mainly red-yellow soil and peat soil. Although peat soil contains high organic matter (according to the analysis, usually 7 ~ 15%), but lack of available nutrients, high acidity, low fertility, therefore, most of the soil is very infertile. In the past, due to the influence of climate and topography, a large number of low-moisture and cold-dip fields were distributed in the paddy soil here. Some of them accumulated water all year round with deep mud feet and trapped cattle. Although the winter is not water, but the soil is dry, locally called “water heart”; some terraced fields, to winter, half wet, half dry, local half field, these low wet cold dip field,