摘要
在江苏省南京市蔬菜花卉研究所引入统计学领域的投影寻踪分类模型,对烤烟节水灌溉不同模式进行筛选和评价。结果表明:灌溉水量并非越大越好,合理的水肥参数更容易获得较高的产量和水分生产效率;模型计算所得T5处理投影值最大,最优灌溉模式为T5(灌水总量4 000 m3/hm2),产量与旺长期最大LAI分别为3 155.62 kg/hm2和5.32,处于6个处理中的最高水平,T5处理水分生产效率为0.79 kg/m3,处于6个处理的中上水平;仅次于T5的灌溉模式为T6,特别干旱地区,也可采用T6灌溉模式。
Several different water-saving irrigation modes were designed for tobacco, and the projection pmuit classification mode were introduced to select and evaluate each water-saving irrigation mode. The results showed that irrigation water volume should be reasonable for it is easier to obtain higher yield and water use efficiency. The largest projection value calculated by the mode was T5, and the optimum irrigation mode also was T5 （total irrigation volume of 4 000 m3/hmZ）; the yield and the largest LAI in vigorous growing stage were 3 155.62 kg/hm2 and 5.32, respectively, which were the highest among six treatments; the water use efficiency of T5 was 0.79 kg/m2, which was at middle and high level among six treatment; T6 was the second best irrigation mode, thereby can be adopted for extremely dry area.
出处
《湖南农业科学》
2012年第12期106-108,112,共4页
Hunan Agricultural Sciences
关键词
烤烟
节水灌溉
模式
评价
投影寻踪
flue-cured tobacco
water-saving irrigation
mode
evaluation
projection pursuit
