田旋花种子发芽特性研究与实生苗出苗规律的调查  

Studies on burgeon characteristic of Convolvulus arvensis seed and investigation on rule of seedling

作　　者：彭建[1] 朱进忠[1] 

机构地区：[1]新疆农业大学草业工程学院新疆草地资源与生态重点实验室,新疆乌鲁木齐830052

出　　处：《新疆农业科学》2005年第4期253-256,共4页Xinjiang Agricultural Sciences

基　　金：新疆发展和改革委员会资助项目"苜蓿原种基地扩建与生产技术体系的研究"(2003-2005年)

摘　　要：对田旋花种子的发芽试验证明,当年生种子有极高的硬实率,室内越冬的种子其硬实率有所下降;在土壤中经过越冬的种子硬实率下降明显,但种子活力下降较大;在土壤中,上层(0～5cm)的种子发芽率低于下层(5—15cm)种子,土壤对田旋花种子起有保护作用;通过在苜蓿种子田中的调查发现,田旋花实生苗的出苗时间非常集中,5月下旬出苗占全年总出苗数的85.64%,7月中旬后停止出苗。It is proved that the Convolvulus arvensis has great seed hardness, the overwintering indoors seed＇s hardness decrases which of the seed in the ,soil descends obviously but the vitality of the seed will descend greatly. In the soil, the superstratum seed＇s germination rate in the superstratum is lower than the underlayer seed＇s and the soil can protect the seed of the Corevolvulus arvensis. On the basis of the investigation on the alfalfa seed in the field, it was found that the time of the germination eentred upon the Convolvulus arvensis seedling. The germination percentage in last ten days of May was up to 85.64% of the whole year. The germination stopped after second ten day＇s of July.

关 键 词：田旋花 种子 硬实 实生苗 

分 类 号：S459[农业科学—植物保护]