论文部分内容阅读
未经处理的湿地松种子播种后,发芽不整齐,出苗期较长。为了研究湿地松种子提早发芽和发芽整齐的有效措施,以及发芽早迟与苗期生长发育的相互关系,我们于一九七五年春进行了种子湿砂贮藏试验。 采用进口的美国湿地松种子。于一九七四年十二月种子到达以后,先进行质量检查（千粒重、纯度）,而后取出一市斤的种子分成两份,每份拌和湿砂（湿砂:种子约为3:1）,各盛一个瓦罐,种子放进时,均用湿砂垫底盖面。一罐置于常温的房屋内,另一罐则放在室外,上盖花钵。对照用种子仍放在原盛种子的纸箱内。拌种的砂子湿度以手捏成团松而稍散的湿润状态为度。室内砂藏的种子,开始每隔3-4天喷水一次,基本上保持了砂子的潮湿,以后未加管理。室外砂藏,由于瓦罐复盖不好,取出播种时,罐内水份较多。 播种的时候,对照用种先浸清水24小时,而后将处理的种子,均用0.2％的高锰酸钾进行消毒。播种方法采用条播粒摆,各取种子100粒,播成四行,每行25粒,播于苗床的同一地段。播种期3月14日。
Untreated pine seeds after sowing, uneven germination, seedling longer. In order to study the effective measures of early germination and sprouting of Pinus elliottii seeds and the correlation between the early and late germination and the seedling growth and development, we carried out the seed wet sand storage test in the spring of 1975. The use of imported American slash pine seeds. After the seeds arrived in December 1974, they were first checked for quality (grain weight, purity), and then a kilogram of seeds was taken out into two portions. Each batch of wet sand (wet sand: about 3: 1 seeds) , Each containing a jar, when the seeds are put, are covered with wet sand bottom cover. A jar placed in a room at room temperature, and the other on the outdoor pot, cover the flower bowl. Control seeds are still placed in the original Sheng seeds of the carton. Seed dressing of sand moisture to hand pinch loose and slightly scattered wet state for the degree. Indoor storage of seeds, began to spray water once every 3-4 days, basically keeping the sand moist, after no management. Outdoor sand storage, due to poor coverage jar, sowing out when the tank more water. When sowing, the control species were first leached with water for 24 hours, and then the treated seeds were disinfected with 0.2% potassium permanganate. Seed sowing method using bar seed pendulum, each take 100 seeds, sowing four lines, 25 lines per line, broadcast in the same location seedbed. Seeding period March 14.