桑树不同品种生态特性的研究

Study on the Ecological Characteristic of Different Mulberry Varieties

为依据生态学的原理和规律建设高产优质桑园,研究了湖桑32号、农桑12号、新一之濑、选792号等不同品种桑园的土壤温度、土壤含水量、土壤呼吸强度、CO_2浓度、空气温度、空气相对湿度、光合有效辐射等生态特性。4个品种的土壤呼吸速率依次为农桑12号>湖桑32号>新一之濑>选792号;增加空气相对湿度的大小顺序为农桑12号>选＊蛇号>湖桑32号>新一之尬湖桑32号周围的地浓度显著高于其它3个品种;农桑12号降低气温的生态特性较为显著。对不同品种桑园与空旷地气候因素进行差异性分析认为,夏季桑园具有降低气温、增加空气相对湿度、降低土壤温度、减少土壤蒸发、增加土壤含水量的生态作用。

In order to establish high-yield and good-quality mulberry on the basis of ecodogical principle and law, the ecological characters of different mulberry varieties, which included soil temperature, soil water content, soil respiration,air temperature, relative humidity, and so on were studied.The order for the soil respiration was Nongsang12 > Husang32 > Shinichinose > Xuan792. The order for the ability to increase relative humidity was Nongsang12 > Xuan792 > Husang32 > Shinichinose. The concentration of carbon dioxide surrounding Husang32 trees was higher than that of other three varieties, and the ability of Nongsang12 to decrease air temperature was the highest. By comparing the situation between the mulberry field and the bare earth , the results showed that the mulberry field in summer has ecological effects such as decreasing the air temperature, increasing the air relative humidity, decreasing soil temperature, reducing soil transpiration and increasing soil water content.