purple paddy soil

基本解释

Effects of different tillage systems on labile organic matter and carbon management index in purple paddy soil of long term experiment site(since 1990) were studied.
以长期定位试验点的紫色水稻土为研究对象，研究了耕作制度对紫色水稻土活性有机质和碳库管理指数的影响。
The test results show the following order of soil types as regard to the soluble fluorine contents from high to low: Shajiang dark soil, Yellow brown earth and Purple soil, Paddy soil, Limy soil.
主要土壤类型土壤水溶性氟含量顺序是砂姜黑土、潮土＞黄棕壤、紫色土＞水稻土＞石灰土、粗骨土。
Available Si content, its affecting factors and effect of Si fertilization in paddy soils from purple soil in Sichuan province were studied by using fields experiments and soil incubation experiments.
通过田间试验和土壤培养试验研究了紫色水稻上有效硅含量的概况，影响因素及施硅效应。