외생균근(外生菌根) 및 토양조건(土壤條件)이 리기다소나무 균목생장(菌木生長)에 미치는 영향(影響)

Effects of Ectomycorrhizae and Soil Condition on Growth of Pinus rigida Seedlings

본(本) 연구(硏究)는 균근균(菌根菌) 접종묘(接種苗)[모래밭버섯균(菌)(Pisolithus tinctorius), 사마귀버섯균(菌)(Thelephora terrestris)]와 무처리(無處理) 묘목(苗木)을 이용(利用)하여 인산수준(燐酸水準)과 수분(水分) 조건(條件)에 따른 묘목(苗木)의 생장(生長) 및 양료흡수(養料吸收)에 미치는 균근(菌根)의 효과(效果)를 측정(測定) 조사(調査)한 것으로 그 결과(結果)는 다음과 같다. 1) 근원경(根元徑) 생장(生長)은 습구(濕區)에서가 건구(乾區)에서보다 2.7배 생장(生長)이 컸다. 2) 건구(乾區)에서는 모래밭버섯균(菌) 처리(處理) 묘목(苗木)의 물질생산(物質生産)은 평균 26% 증가하고, 무처리(無處理) 묘목(苗木)은 72% 증가하여 모래밭버섯균(菌) 처리(處理) 묘목(苗木)이 무처리(無處理) 묘목(苗木)보다 순물질생산량(純物質生産量)이 적었다. 3) 순물질생산량(純物質生産量)에 있어서 건구(乾區)에서보다 습구(濕區)에서 4배 증가했으나 인산(燐酸) 시비수준(施肥水準)은 순물질생산량(純物質生産量)에 영향이 없었다. 4) 모래밭버섯균(菌) 처리(處理)는 습구(濕區)에서 질소(窒素), 인산(燐酸) 및 가리(加理)의 양과(養科) 흡수(吸收)의 효과(效果)가 뚜렷이 나타났는데 무처리(無處理) 묘목(苗木)에 비하여 각각 1.9배, 1.8배, 1.5배의 흡수(吸收)가 촉진(促進)되었다. 5) 모래밭버섯균(菌) 처리(處理) 묘목(苗木)은 인산(燐酸) 시비수준(施肥水準)이 증가함에 따라 인산(燐酸) 흡수량(吸收量)이 많았으나 무처리(無處理) 묘목(苗木)에서는 인산(燐酸) 시비수준(施肥水準)의 증가가 인산(燐酸) 흡수(吸收)에 영향(影響)을 미치지 않았다. 6) 모래밭버섯균(菌) 처리(處理) 묘목(苗木)은 인산(燐酸) 시비수준(施肥水準)이 증가함에 따라 가리(加理)의 양과(養科) 흡수(吸收)를 촉진(促進)시켰다.

The experiment was conducted to test the effects of ectomycorrhizal inoculation and soil moisture regime on growth and nutrient uptake of Pinus rigida seedlings. Two-year-old seedlings inoculated with either Pisolithus tinctorius or Thelephora terrestris were used for this experiment. There were two moisture treatments and four phosphate treatment levels with three replications. Height and root collar diameter growth and dry weight increase were measured and nitrogen, phosphorous, and potassium in the tissue were analyzed three months after the initiation of phosphate and moisture regime treatment. Results are as follows; 1) Height growth of seedlings was not affected in all treatments. (mycorrhizae, fertility, moisture). 2) High moisture regime increased root collar diameter growth 2.7 times as large as low moisture regime. 3) In low moisture regime, net production increased 26% in seedlings inoculated with Pisolithus tinctorius and increased 72% control seedlings. 4) In high moisture regime, net production of inoculated seedlings with Pisolithus tinctorius increased four times as much as that of control seedlings but increased $P_2O_5$ in fertility level did not affect net production. 5) In uptake of nitrogen, phosphate, and potassium, Pisolithus tinctorius - inoculated seedlings increased uptake by 1.9, 1.8, and 1.5 times, respectively, as much as control seedlings. 6) Increase in $P_2O_5$ fertility level enhanced the uptake of $P_2O_5$ in Pisolithus tinctorius - inoculated seedlings, but not affected the uptake of $P_2O_5$ in control seedlings. 7) Increase in $P_2O_5$ fertility levels enhanced the uptake of $K_2O$ in Pisolirhus rinctorius - inoculated seedlings.