应用经典统计学方法研究淮北平原砂姜黑土养分状况及其空间变异性。
In the light of the principle of classical statistics, the study on the status and spatial variability of nutrient of lime concretion black soil in Huaibei plain was conducted.
砂姜黑土广泛分布于河南省的中南部地区，是影响农业低产的主要旱作土壤之一。
There is much sajang meadow soil in central and southern area of Henan province.
砂姜黑土是一种具有“黑土层”和“砂姜层”的暗色土壤，在枣庄市沿运滨湖地带广泛分布。
Shajiang Black Soil is a kind of dark soil which has black soil layer and Shajiang layer. It is wide-spread in the lowlands along the canal and near the lake.
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。
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.
氮磷化肥配施有机肥具有持续提高产量、培肥土壤的双重效果，是砂姜黑土培肥改良较理想的施肥方式，但同时要注意钾素的补充。
Nitrogen phosphorus chemical fertilizer combined organic improve yield, more ideal way of fertilizing. But should pay attention to the plain supplement of potassium at the same time.
氮磷化肥配施有机肥具有持续提高产量、培肥土壤的双重效果，是砂姜黑土培肥改良较理想的施肥方式，但同时要注意钾素的补充。
Nitrogen phosphorus chemical fertilizer combined organic improve yield, more ideal way of fertilizing. But should pay attention to the plain supplement of potassium at the same time.
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