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该研究分析了利用HSPAN、IGP、VAMA、THSN-2、PPA等5种吸水剂处理苗木的效效果.结果证明:经过处理的油松、侧柏苗木成活率和存活日数均高于对照,但不同吸水剂品种间成活率提高的幅度和存潘日数延长的时间随气候、树种的不同而不同,气候条件比较正常的年份差异不明显,而干旱的年份则差异很大.在干旱年份,用H8PAN1%处理的效果,优于THSN-2、PPA1%处理的效果.新根的发生时间、数量和最长新根长度也随吸水剂品种的不同而不同,以HSPAN处理的苗木发根早、根量多、最长新根长度大.各种吸水剂之间苗木成活、发根情况不同的原因,在于苗木根际周围形成的水分状况不同.
The results showed that the survival rate and surviving days of P. tabulaeformis and Platycladus orientalis seedlings were all higher than those of the control The rate of increase in the survival rate of different water-absorbing agents and the extension of the duration of stored days vary with the climate and tree species, and the climatic conditions are not significantly different from those in the normal years, while the years of drought are quite different. In the drought years, The effect of H8PAN1% treatment is better than that of THSN-2 and PPA1% .The occurrence time, number and length of new root are also different with the different water-absorbing agent, Root length, the longest length of the new root.A variety of water-absorbing seedlings survive, the root causes of different hair, seedling rhizosphere around the formation of different water conditions.