不同处理对四翅滨藜嫩枝扦插育苗的影响

Effects of Different Treatments on the Softwood Cuttings of Atriplex canescens

嫩枝扦插是四翅滨藜最主要的苗木繁育方式,但插穗不足、高温期扦插育苗给水平衡以及移栽成活率低等问题制约着规模化生产。采用单因素随机试验设计及随机抽样调查法进行试验研究。结果表明,二次修剪较一次修剪提高成品穗条126.7%,采前科学施肥灌水能够提高扦插生根率3.8%,40%~60%遮阳能够提高插穗生根率6.2%,基质穴盘育苗有利于缩短育苗时间,提高苗木移栽成活率13.2%。

Softwood cuttings is one important breeding method for Atriplex canescens. However,large scale cultivation was restricted by by the problems such as lack of softwood cuttings,balance of water supply in hyperthermal stage,and the lower survival rate of transplant seedlings. In order to solve these problems, some technologies were experimented and analyzed by single factor randomized trial design and random sampling investigation method. The results showed that the number of available spikes could increase 126.7% by two times pruning than only one time pruning. The rooting rate raised by 3.8% for the scientif- ic fertilization and irrigation. The rooting rate of cuttings was improved by 6.2% for shading of 40%- 60%. Plug-plant breeding of A. canescens by substrate tray was a better model, which could shorten the time of seedling and raise the survival rate of seedling transplanting by 13.2%.