By investigating the key survival and growth indexes, the results showed:（1）the stage of the seeding has the most important effective.The survival rate of the cuttings was the highest by using 1-year-old cuttings.Th...By investigating the key survival and growth indexes, the results showed:（1）the stage of the seeding has the most important effective.The survival rate of the cuttings was the highest by using 1-year-old cuttings.The older the cuttings,the lower the survival rate.（2）There was no obviously rules by using ABT.（3）By comparing the results of covering with black & white plastic velum and no covering,the white one is considered better than the two others.In practice work,the type of A1B1C2 was better.The concentration of ABT could be reduced,but the time of soaking should be prolonged.展开更多
箭胡毛杨为20世纪80年代选育出的杨树杂交品种,扦插繁殖是其良种繁殖的主要方式.通过对6、9、12、151、8 cm 5种不同长度插穗与苗木繁殖中生根、成活及根生长等因子的分析,研究了提高箭胡毛杨繁殖系数的技术参数.结果表明,不同插穗长度...箭胡毛杨为20世纪80年代选育出的杨树杂交品种,扦插繁殖是其良种繁殖的主要方式.通过对6、9、12、151、8 cm 5种不同长度插穗与苗木繁殖中生根、成活及根生长等因子的分析,研究了提高箭胡毛杨繁殖系数的技术参数.结果表明,不同插穗长度对箭胡毛杨生根能力、成活率和根生长量均有影响,但其中12、15、18 cm插穗长度间差异不显著.对综合反映苗木根生长量、成活率和插穗长度的参数K值研究表明,K值在插穗长度为9- 12cm区间内最大.因此认为采用9- 12 cm插穗,可在保证苗木生长质量的同时,达到最大的繁殖系数.展开更多
文摘By investigating the key survival and growth indexes, the results showed:（1）the stage of the seeding has the most important effective.The survival rate of the cuttings was the highest by using 1-year-old cuttings.The older the cuttings,the lower the survival rate.（2）There was no obviously rules by using ABT.（3）By comparing the results of covering with black & white plastic velum and no covering,the white one is considered better than the two others.In practice work,the type of A1B1C2 was better.The concentration of ABT could be reduced,but the time of soaking should be prolonged.
