薬剤の立木注入に関する研究(第21報)スギ苗木に対する栄養液の注入試験

A study was made of the effect of injected nutrient solution to the Sugi seedlings, namely the purpose of study was to measure the growth of those injected seedlings compared with uninjected ones grown in the same condition of soil.
The first experiments continued from May 29 to November 11 in 1959 and the second continued from May 12 to October 15 in 1960.
The composition of injected nutrient solution are following.
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Components No. 1 ｜ Components No. 2
<(NH_2)>_2CO・・・・・・・・・・・0.2142gm. ｜<(NH_2)>_2CO・・・・・・・・・・・・・・0.3213gm.
KH_3PO_4 ・・・・・・・・・・・0.0766gm. ｜KH_3PO_4 ・・・・・・・・・・・・・・0.1149gm.
KCl ・・・・・・・・・・・0.0470gm. ｜KCl ・・・・・・・・・・・・・・0.0705gm.
Ca<(NO_3)>_2・4H_2O ・・・・・・・0.1686gm. ｜Ca<(NO_3)>_2・4H_2O ・・・・・・・・・・0.2529gm.
MgSO_4・7H_2O ・・・・・・・・・・0.2444gm. ｜MgSO_4・7H_2O ・・・・・・・・・・・・・0.3666gm.
FeCl_3・6H_2O ・・・・・・・・・・・10mgm. ｜FeCl_3・6H_2O ・・・・・・・・・・・・・・10mgm.
MnSO_4・4H_2O ・・・・・・・・・・・ 3mgm. ｜MnSO_4・4H_2O ・・・・・・・・・・・ ・・・3mgm.
H_3BO_3 ・・・・・・・・・・・・・・ 3mgm. ｜H_3BO_3 ・・・・・・・・・・・・・・・・・ 3mgm.
CuSO_4・5H_2O ・・・・・・・・・・・ 1mgm. ｜CuSO_4・5H_2O ・・・・・・・・・・・・・・ 1mgm.
ZnSO_4・7H_2O ・・・・・・・・・・・ 1mgm. ｜ZnSO_4・7H_2O ・・・・・・・・・・・・・・ 1mgm.
α-Naphtaleneacetate ・・・・・・・10mgm. ｜α-Naphtaleneacetate ・・・・・・・・・・10mgm.
distilled water・・・・・・・・・・ 1000ml. ｜gibberellin・・・・・・・・・・・・・・・・ 3mgm.
pH=4.8 ｜distilled water・・・・・・・・・・・・・ 1000ml.
｜ pH = 4.8
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The nutrient solution was injected into the transpiration stream of the xylem directly through a small hole bored in to the stem.
Lomy soil was used at the first test, and gravel soil was used at the second test.
The results of the experiments are summarized in Tables 7-11 and illustrated in Phot. 1-13.
In preliminary experiments, there was no significant difference between the growth of height in the injected seedlings and in the uninjected ones.
In later experiments, the injected seedlings have large growth of hight, diameter, circumference, and row weight compared with those of uninjected ones.