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灌漠土是由绿洲荒漠区自然土壤演变而成的。由于人工改善了水热条件,繁茂了植被状况,使固定转化太阳能的速率提高,加速了生物积累。加之不同植物对各类营养元素的选择吸收,丰富了土壤养分,从而使土壤越种越肥。例如水热条件好的热带雨林,生产力就高,年均平方米可积累干物质2200克;极端荒漠区生产力就低,年均平方米积累干物质仅3克。
Irrigated desert soil is evolved from the natural soil of the oasis desert. Due to the artificial improvement of hydrothermal conditions, lush vegetation conditions, so that the fixed conversion rate of solar energy to accelerate the biological accumulation. Coupled with the different plants on the various types of nutrient absorption and selection, enrich the soil nutrients, so that the more the more the soil fertilizer. For example, tropical rainforests with good hydrothermal conditions have high productivity and can accumulate 2,200 grams of dry matter per square meter on average. Productivity in the extreme desert is low, and dry matter accumulates only 3 grams per square meter.