摘要
以新陆早 7号为试材 ,进行了不同水肥条件下膜下滴灌棉株群体冠层结构测定和产量结果分析。试验表明 ,合理水肥条件下的棉株群体叶面积指数 ( LAI)、叶倾角 ( MLA)和散射光透过率 ( TD) ,在盛花盛铃期分别为 3.55~ 3.95、40°~ 48°和 1 8.5%~ 2 8.1 %。在一定水肥范围内 ,滴灌棉花产量随灌水量和施肥量的增加而增加 ,但超过一定阈值产量有下降趋势。适宜水肥条件下产量最高。
Cotton canopy structure and yield was determined and analyzed in different water and fertilizer conditions under mulch drip irrigation (MDI) with Xinluzao No.7 as the test material. The results showed that LAI, MLA and TD of MDI cotton was 3.55~3.95, 40°~48° and 18.5%~28.1% respectively in blooming period by the supply of rational water and fertilizer quantities. Yield of MDI cotton increased in the scope of specific water and fertilizer. But yield dropped gradually when certain quantity of water and fertilizer arrived. High-yield was created in an appropriate supply of water and fertilizer.
出处
《干旱地区农业研究》
CSCD
北大核心
2001年第2期42-47,共6页
Agricultural Research in the Arid Areas
基金
新疆天业集团公司资助项目!"作物膜下滴灌高产理论与技术研究"部分内容
关键词
棉花
膜下滴灌
水肥
冠层结构
产量
cotton
MDI
water and fertilizer
canopy structure
yield