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通过田间控制灌水形成土壤和组织含水率梯度,探讨组织含水率在克隆生长调节中的作用规律和机制。结果表明:随着灌水强度的增大,土壤含水率持续上升,而组织含水率先升后降;分株存活、生长以及克隆繁殖、克隆扩散能力随灌水强度(土壤含水率)的增大先升后降,随组织含水率的增大直线上升。因此组织含水率是导致克隆生长调节的直接因素,灌水强度(土壤含水率)是间接因素,灌水强度(土壤含水率)通过改变组织含水率而起作用。故随着组织含水率先升后降,中国沙棘通过克隆生长调节形成与之相适应的觅养格局连续体“游击型-聚集型-游击型”。
Soil and tissue water content gradient was formed through field control irrigation, and the rule and mechanism of tissue moisture content in clonal growth regulation were discussed. The results showed that with the increase of irrigation intensity, the soil water content increased continuously, but the tissue water content increased first and then decreased. The survival, growth and clonal propagation of ramets increased with the increase of irrigation intensity (soil water content) After falling, with the increase of the moisture content of the tissue straight up. Therefore, tissue moisture content is the direct factor that leads to the regulation of clonal growth. Irrigation intensity (soil water content) is an indirect factor. Irrigation intensity (soil water content) plays a role by changing tissue moisture content. Therefore, with the moisture content of the tissue first increased and then decreased, the Chinese seabuckthorn regulates and forms the continuum “maze-agglomeration-guerrilla” corresponding to it through clonal growth regulation.