Taking tomato "Kate two" as the experimental material, the effects of different dosage of garlic straw on physical and chemical characteristics of continuous cropping soil and root activity of tomato in solar greenh...Taking tomato "Kate two" as the experimental material, the effects of different dosage of garlic straw on physical and chemical characteristics of continuous cropping soil and root activity of tomato in solar greenhouse were studied. The results showed that after applying with garlic straw, maximal and minimal temperatures in 0-15 cm soil layers were directly proportional to the amount of returned garlic straw, which were 2.39 ℃ and 1℃ higher than that of the control respectively. The unit weight was decreasing upon the amount of applied garlic straws of soils in different depths, but the porosity of soil was increasing. For example, unit weight and porosity changed the most significantly in soils in the depths of 0-10 cm, which went down by 6.71% and 6.18%, respectively. Besides, garlic straw returning to field improved soil pH, reduced soil conductivity and soil acidification and relieved soil secondary salinization, especially in 0-20 cm soil layers. In addition to that, the application of garlic straw increased the root activity of tomato (max 31.45%), and delayed root system senescence in late stage. Therefore, garlic straw returning could improve the physical and chemical characteristics of soil by succession planting and root activity of tomato in solar greenhouse.展开更多
文摘Taking tomato "Kate two" as the experimental material, the effects of different dosage of garlic straw on physical and chemical characteristics of continuous cropping soil and root activity of tomato in solar greenhouse were studied. The results showed that after applying with garlic straw, maximal and minimal temperatures in 0-15 cm soil layers were directly proportional to the amount of returned garlic straw, which were 2.39 ℃ and 1℃ higher than that of the control respectively. The unit weight was decreasing upon the amount of applied garlic straws of soils in different depths, but the porosity of soil was increasing. For example, unit weight and porosity changed the most significantly in soils in the depths of 0-10 cm, which went down by 6.71% and 6.18%, respectively. Besides, garlic straw returning to field improved soil pH, reduced soil conductivity and soil acidification and relieved soil secondary salinization, especially in 0-20 cm soil layers. In addition to that, the application of garlic straw increased the root activity of tomato (max 31.45%), and delayed root system senescence in late stage. Therefore, garlic straw returning could improve the physical and chemical characteristics of soil by succession planting and root activity of tomato in solar greenhouse.