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为研究间作系统的作物参数,于2005年在四川间作地区进行了作物高度、覆盖度和叶面积指数的时间变化研究。结果表明:作物的高度、覆盖度和叶面积指数随时间变化很大;玉米的最大高度是177cm,最大覆盖度(86%)出现在花期,最大叶面积指数是1·96;红苕的最大和最小株高分别为22和12cm,最大覆盖度(73%)出现在薯块膨大期,最大叶面积指数为1·79。与玉米间作时,红苕所有作物参数均受玉米影响。在玉米-红苕间作系统中,最危险的侵蚀期是玉米收获后至红苕覆盖度最大期。
In order to study the crop parameters of intercropping system, the temporal variations of crop height, coverage and leaf area index were studied in the intercropping area of Sichuan Province in 2005. The results showed that the height, coverage and leaf area index of crops varied greatly with time. The maximum height of corn was 177cm, the maximum coverage (86%) appeared at florescence and the maximum leaf area index was 1.96. The minimum plant height was 22 and 12 cm, respectively. The maximum coverage (73%) appeared in tuber enlargement period with the maximum leaf area index of 1.79. Intercropping with corn, all the crop parameters of red crab are affected by corn. In the maize-red mulched intercropping system, the most dangerous period of erosion is the maximum maize to mandarin red coverage after harvest.