薄壳山核桃嫁接技术试验

通过对不同种子培养的砧木,采用不同的砧木和接穗处理方法及不同的嫁接方法进行的连续5年的试验研究,总结出了薄壳山核桃规模化扩繁的成套技术。这套技术包括选用大粒饱满种子,施足基肥,培育壮苗,壮苗于年前断根移栽,提前采集接穗并低温保存,用切接或劈接法嫁接,嫁接后增温育苗。试验结果表明:实生砧木的培育周期从2~3 a缩短为1 a,1~2年生砧木嫁接成活率稳定在80%左右;繁育出了良种嫁接苗1.5万株;建立了早实丰产示范基地6处34.67 hm2,造林成活率达到90%以上;其中"马汉(Mahan)"嫁接苗造林后,2~3年始花,3~4年可挂果。

Grafting Techniques in Carya illinoensis

Large-scale propagation techniques had been researched for 5 years,taken rootstocks from different seeds in Carya illinoensis as materials,by different treatments of rootstock and scion,and different ways of grafting.The set of optimum techniques included selecting big and filled seeds,fertilizing sufficient base fertilizer,cultivating healthy seedlings,cutting root and transplanting at the end of the year,collecting scions ahead of time and preserving its in hypothermia,grafting by cut grafting or split grafting,cultivating seedlings by improving temperature after grafting,and so on.The results showed that cultivation period shortened to 1 year from 2-3 years,and the survival rate of 1-2 years rootstocks was about 80%.There were 1 5000 improved grafted seedlings.Six early-fruit and high-yield demonstration bases had been built,total 34.67 hm2.The survival rate of plantation was over 90%."Mahan" grafted came into the first flowering dates in 2-3 years,fruited in 3-4 years after planting.