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现代蔬菜穴盘育苗技术的应用中,秧苗营养面积很小,基质的持水量和保水性成为提高秧苗质量的重要限制因子。采用两种保水剂和三种施用浓度研究了对基质保水性和黄瓜秧苗质量的影响。结果表明:试验的两种保水剂最大浓度处理T3(西沃特4‰)每克基质吸水后质量为2.400g;T6(科翰4‰)为2.475g,而对照基质的饱和持水后质量仅为2.250g。且失水速率与保水性规律一致。证明在实行营养基质育苗时,能够有效解决长期以来存在的育苗中需水严格与供水保水不足的矛盾,但高浓度保水剂最终的秧苗质量较差,实验中发现,秧苗质量以科翰保水剂2‰处理最高。
In the application of modern vegetable plug seedling technology, the nutrient area of the seedling is very small, and the water holding capacity and water holding capacity of the substrate become important limiting factors for improving the quality of the seedling. Two water retention agents and three application concentrations were used to study the effect of substrate water retention and cucumber seedling quality. The results showed that the maximum water absorption of the two kinds of super absorbent polymer (T3 = 4,500) was 2.400g per gram of substrate and 2.475g for T6 (4,000 ‰) Only 2.250g. And the water loss rate and water retention law. Proved that in the implementation of nutrition substrate nursery, can effectively solve the long-standing nuisance water supply and water shortage strict contradiction, but the final concentration of high-concentration super absorbent water quality is poor, the experiment found that the quality of seedlings to John’s Paul SAP 2 ‰ treatment highest.