不同作物、土壤类型和灌溉方式对沼液消纳能力的影响

Effect of Different Crops,Soils and Irrigation Modes on Biogas Slurry Disposition

本文分别采用盆栽和田间试验,研究不同作物,土壤类型和灌溉方式对沼液消纳能力的影响。结果表明,当种植作物为青贮玉米、甜高粱和白菜时,每667 m2紫色土可消纳的沼液量分别为3.8、10.5和2.3 t,而每667 m2黄壤中可消纳的沼液量为4.7、10.5和2.7 t。在紫色土中,当种植作物为白菜时,漫灌和喷灌条件下每667 m2可分别消纳沼液2.4和1.8 t。试验表明不同的作物种类、土壤类型及灌溉模式均对沼液的田间消纳具有一定影响。

In this paper,pot experiment and field testing were conducted to study the effect of different crops,soil types and irrigation modes on biogas slurry disposition. The result showed that when silage maize,sweet sorghum and Chinese cabbage were planted in purple soils,the amounts of disposed biogas slurry were of 3. 8,10. 5 and 2. 3 tons /667m^2,respectively,while the amounts of disposed biogas slurry were changed to 4. 7,10. 5 and 2. 7 tons /667m^2 corresponding to silage maize,sweet sorghum and Chinese cabbage planted in yellow soils. Besides,the treated amounts of biogas slurry by Chinese cabbage in purple soil were 2. 4 and 1. 8 tons /667 m^2,respectively under the conditions of sprinkling irrigation and tube-well irrigation. These results showed that each of crops,soils types and irrigation modes could influence the disposition of biogas slurry.