基质与地膜覆盖对枸杞扦插苗生长及内源营养物含量的影响

为了进一步提高枸杞苗木的繁育品质，以‘宁杞一号’为试验材料，研究了不同基质（粗砂、细河沙、蛭石、耕作土、草炭土+蛭石）和地膜覆盖处理对枸杞硬枝扦插苗生长及内源营养物含量的影响。结果表明:1）草炭土加蛭石的混合基质最有利于插条萌芽，其萌芽成活率高达67.8%～88.3%；其次为耕作土（64.6%～79.8%）和粗砂（58.6%～81.2%）；细河沙和蛭石的表现最差。2）混合基质对插条地上部分生长的促进作用最明显，平均新梢生长量达到15.40 cm，其次分别为耕作土（14.43 cm）、蛭石（11.70 cm）、细河沙（11.45 cm）和粗砂（10.17 cm）。3）粗砂最有利于插条根系生长，但是粗砂不利于插条地上部分的形态建成。4）地膜覆盖在萌芽成活率、新梢及根系生长方面均优于露地扦插，并能显著加快插条的萌发和成苗形成。5）地膜覆盖能够促进插条内源营养物质的形成，可溶性糖和可溶性蛋白质含量均高于露地扦插。6）10种处理中，以混合基质+地膜覆盖方式的效果最好，最适用于枸杞的硬枝扦插。

Effects of Substrate and Plastic Mulching on the Growth and Endogenous Nutrient Content of Lycium barbarum Cuttings

In order to improve the quality of the seedling breeding of Lycium barbarum,cultivar ‘Ningqi-1’ was taken as test material to study the effects of substrate and plastic mulching on the growth and endogenous nutrient contents in the cuttings.The results indicated that 1) the mixed substrate of turfy soil and vermiculite were the most conducive to cutting germination,the germination rate was up to 67.8%-88.3%; followed by soil (64.6%-79.8%) and coarse sand (58.6%-81.2%); river sand and vermiculite were the worst.2) Mixed substrate significantly promoted the growth of above ground part of the cuttings,the average growth of new shoots reached 15.40 cm,followed by soil (14.43 cm),vermiculite (11.70 cm),river sand (11.45 cm) and coarse sand (10.17 cm).3) Coarse sand was beneficial to root growth of the cuttings,but not conducive to the formation of above ground part.4) The germination rate,shoot growth and root growth of plastic film mulching were better than those of open field cuttings,and the germination and seedling formation of cuttings could be accelerated by mulching.5) Plastic film mulching could promote the formation of endogenous nutrients,soluble sugar and soluble protein contents were higher than that of open field cuttings.6) In the 10 treatments,the mixed substrate+plastic film mulching method had the best effect,which was most suitable for hardwood cutting.