摘要
主要讨论了北疆棉区推广品种新陆早6号与新陆早8号在不同灌水量条件下的冠层结构特征的差异性,得出新陆早6号对限量滴灌反应不敏感,而新陆早8号对限量滴灌反应较敏感。因此在限量滴灌条件下选择新陆早6号种植较适宜。叶面积指数低,叶片平均倾斜角度大,群体散射辐射透过系数和群体直射辐射透过系数增加,对光能的截获率降低,由此得出了不同品种对灌水量的反应表现及理想群体冠层结构的合理指标,为增加棉花产量和提高水分利用效率提供了理论依据。
This paper mainly discussed the diffierences of cotton canony structural characteristics in diffierent irrigation condition of the extend breed Xinluzao6 and Xinluzao8 in North Xinjiang cotton growing region , then discovered Xinluzao6 is not sensitive to limited drip irrigtation, and Xinluzao8 is more sensitive to the limited drip irritation. Thus Xinluzao6 is better at limited drip irrigation condition. Reduce LAI and canopy light interception, then increase canopy mean folage inclination angle and transmission coefficient for diffuse penetration, transmission coefficient for radiation penetration.Then acquired the response of varieties toward diffierent irrigation and the ideal reasonable index of cotton canopy structure, and come to theoretical ground of increasing cotton production and improving availability of water.
出处
《新疆农业科学》
CAS
CSCD
2004年第1期17-20,共4页
Xinjiang Agricultural Sciences
基金
国家自然科学基金(30160040)
关键词
灌水量
棉花
冠层结构
调控作用
品种
different irrigation
cotton
canopy structure
cultivation methods
