| With the improvement of people's living standards,the demand for ornamental bamboo is increasing.How to use high-efficiency seedling method to obtain excellent ornamental bamboo seedlings in a short time,expand the breeding coefficient,improve the expansion efficiency,and scale seedling has become important issues in production and technology.Seedlings by container are characterized by scale,specialization and standardization,and are the development direction of bamboo seedling industry in the future.In this paper,we studied the effects of Bambusa ventricosa bamboo stumps and Bambusa multiplex bamboo stumps and bamboo stalk's traits on the quality of bamboo shoots and bamboo shoots grow into new bamboo with seedling by container,and explored the best mother bamboo age and length of stalk to seedling by bamboo stumps,the best part of bamboo stalk,the way of cover bamboo stalk and length of cover stalk for seedling by cover bamboo stalk.The main findings are as follows:(1)The age of bamboo stump and the length of stalk had no significant effect on the survival rate of seedling by cover bamboo stump in container.(2)The age of bamboo stump has a significant effect on the bamboo shoots grow into bamboos of Bambusa ventricosa by cover bamboo stump in container,the bamboo shooting rate and the new bamboo size of the 3-year-old bamboo stump are significantly larger than that of the 1-year-old bamboo stump(P<0.05),the amount of bamboo shoots was significantly more than 1 and 2 years old bamboo stump(P<0.05);The age of bamboo stump had no significant effect on the rate of bamboo shoots and the amount of shoots of Bambusa multiplex by cover bamboo stump in container,however,the branch sprouting,rooting and new bamboo size of the 1-year-old Bambusa multiplex were significantly better than that of the 3-year-old bamboo stump(P<0.05).(3)There was a negative correlation between the length of stalk and the rate of shooting,and a positive correlation with the number of branch,the number of rooting and the size of new bamboo.The rate of bamboo shoots of without stalk's Bambusa ventricosa was significantly greater than that of bamboo stalks with 10 cm and 20 cm.the number of branch with 20 cm long stalks is significantly larger than that of bamboo stump that do not leave stalks and leave stalks 10 cm long,the number of roots is significantly higher than that without stalks,but the average shoot yield was significantly less than that of bamboo stump that did not leave stalks and stay stalks 10 cm long(P<0.05);The rate of bamboo shoots without stalked Bambusa multiplex bamboo stump was significantly greater than that of bamboo stumps with a length of 20cm(P<0.05),The situation of branch germination,roots and new bamboo growth of 20 cm were the best,and the bamboo stalks with 10 cmwere followed.(4)With the increase of the diameter of Bambusa ventricosa bamboo stumps,The number of shoots and roots increased,and the size of new bamboo increased,The branches,roots and new bamboos of the bamboo stalks with the diameter of 19.62~28.02 cm were the best,and the bamboo stalks were the second largest in the range of 13.99~19.62 cm.The bamboo seedlings with with Bambusa multiplex with a medium-thickness,that is,bamboo stalks with a diameter ranging from 6.12 to 7.70 cm,have better seedling growth effects.(5)The bamboo shoots of Bambusa ventricosa are earlier than Bambusa multiplex,and the time of bamboo shoots are concentrated;The older the bamboo stumps,the later the bamboo shoots.(6)When the seedlings with Bambusa multiplex by covered with stalks,The survival rate of bamboo stalks in central stalk was significantly higher than that in upper middle's bamboo stalks,the number of rooting was significantly less than that of upper middle and lower middle's bamboo stalks,the height of new bamboo was significantly lower than that of upper middle's bamboo stalks(P<0.05);The survival rate and shooting amount of bamboo stalks with 3 joints were significantly larger than that of 1 and 2 joint's bamboo stalks,and the number of roots was significantly more than 2 joint's bamboo stalks,but the length of dominant roots was significantly shorter than that of 2 joint's bamboo stalks(P<0.05);The diameter in the range of 6.08~8.64 cm,length in the range of 35.8~50.4cm of bamboo stalk's is better the growth of bamboo shoots;The way of cover stalks on the survival rate and the growth of new bamboo was no significant difference.(7)The diameter and height of the Bambusa multiplex bamboo seedlings of the cover stump were significantly greater than cover stalk.In summary: Bambusa ventricosa and Bambusa multiplex can be cover stump and stalk in the container for seeding,to expand the breeding coefficient and shorten the seeding cycle.The survival rate of seedlings by cover stump is higher than seeding by cover stalk and the seedling effect is better. |
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