摘要
１９８９～１９９１年的研究表明：青皮３号叶形的转换是在一定叶龄基础上发生的，根据叶龄与叶形结合来划分生长阶段比传统的株高法和生长速度法更为稳定和准确；苗期和旺长初期与纤维细胞的慢速分化期和旺盛分化初期相对应，分别为心叶期（０～８叶龄）和３裂叶期（９～１２叶龄）；旺长盛期包括纤维分化盛期及积累盛期，分别与５裂叶初（１３叶龄）至５０叶龄左右（３０片７裂叶）和５０叶龄左右至９月底。１９９２年的分期收获试验表明，９月底以后，纤维产量及强力均提高很少，收获期只与光、温有关，与叶龄无关。因此，提前播种和早施旺长肥（提高出叶速度）以及延长纤维积累盛期是高产优质的关键。
The studies with "Qingpi NO 3" from 1989 to 1991 showed that the changes of leaf shapes took place after a given leaves. Growth stages could be divided by leaf age and leaf shape, which was both more stable and more accurate than that by growing rate and stem height. In seedling stage (leaf age:0￣8, leaf shape:cordate leaves), the rate of fiber cell differentiation was low, and the early vigorous growth stage (leaf age:9￣12, leaf shape:palmate 3 split) was also the early vigourous differentiation stage of fiber cells. The full flourish growth stage included 2 full flourishes i.e. fiber cell differentiation (leaf age:13￣50±) and fiber accumulation (leaf age:50±￣ late sept). The samples from different harvest times in 1992 indicated that, after late Sept or early Oct, both the accumulation and the strength of fibers were increased little. Harvest time was related to day length and temperature. There was no relationship between harvest time and leaf age. Therefore, early sown and early fertilization for vigorous growth (in order to increase leaf age) were the key for high output and streng fibers because the full florish time of fiber accumulation would be longer.
出处
《湖北农学院学报》
1996年第3期167-174,共8页
Journal of Hubei Agricultural College
关键词
红麻
叶龄模式
高产
栽培
Kenaf( Hibiscus cannabinus L.)
leaf age model
cultivation for high fiber output and strength
