Effects of drought stress on agriculture soil

摘要: Droughts often affect the soil ecosystem directly. To address this question, a series of prototype observation experiments were designed in study. The objective study was to identify changing tendencies microbial biomass carbon content and proportion organic under different drought conditions. All samples collected from fields about 10 cm far away rhizosphere maize, selected as indicator for identifying effects extreme on agriculture ecosystem. results showed that optimum mass water 19.5 % demarcation point 14.3 %, which could be used demonstrate alters degradation irrigation requirement crops. Meanwhile, sustainability ecosystems also evaluated after rainstorm with rehabilitation. suggested recover interfered by moderate drought, its tolerance well function activity improved. Soil system not adapt severe stress, barely restore within few days, structure damaged. From view, we conclude should kept above 10 % avoid being destroyed. Nevertheless, these findings watered when lower than provided reference improving increase grain output.