某些环境条件对凤眼莲生物生产力的影响

A Primary Study of Bioeffeets of some Environment Conditions on Eichhornia erassipes

生猪生产的发展不仅关系到全国民众的肉食供应,而且发展生猪生产也是广大农牧民脱贫致富的重要途径之一。市场价格、猪源、疫病、饲料资源等均可影响生猪的生产发展,尤其饲料资源是制约生猪生产的重要因素。内蒙古科尔沁沙地面积约4.20×16~6 hm^2,这里气候干燥,土地风蚀沙化,植被稀疏,饲料资源贫乏,生猪生产发展滞后。因此,开辟新的饲料资源,提高饲料产量是该地区急待解决的问题。中国科学院沈阳应用生态研究所甘旗卡试验站从1994～1995年在科尔沁沙地昭乌达盟和哲里木盟引种水生植物饲料——凤眼莲(水葫芦)获得成功。

The bioeffects of some environment conditions such as fertilization, alkalinity and precipitation on the productivity of Eichhornia crassipes were studied in this paper. The results showed that the increase regularity of plant heigth, blade width and biomass of Eichhornia crassipes related to fertilization was 3 %>2 %>1%, to alkalinity was pH7>pH8>pH9>pH10, and to precipitation was 450mm>350mm. The variation of the strength of physiologic metabolism related to the environment conditions was similar to the plant heigth, blade width and biomass in the experiment.