Abstract
This experiment was carried out to investigate the effects of direct seeding and planting of seedlings in different ages on yield and yield characteristics of Cynanchum wilfordii $H_{EMSLY}$. Emergence date was three days earlier in direct seeding compared to May 14 in plots planted with one - or three - year - old seedlings. Petiole length was 16cm and 26cm longer in direct seeding and 1 - year - old seedlings, respectively, compared to 279cm in plot of 3 - year - old seedling. Root diameter was 0.4cm thicker in direct seeding and 0.5cm thicker in 1 - year - old seedlings compared to 1.0cm in seedlings of three years old. Root length was 7.2cm shorter in direct seeding, but was 0.6cm longer in 1 - year - old seedlings than 32.2cm in seedlings of three years old. Yield increased by 29 % in direct seeding and 55% in seedlings of one year old compared to 1,403kg/l0a in 3 - year - old seedlings. In cultivation of Cynanchum wilfordii $H_{EMSLY}$, the suitable planting methods were direct seeding or the use of 1 - year - old seedlings which were profitable at higher density as $50{\times}10cm$.
백하수오(白河首烏) 재배시(栽培時) 적합(適合)한 종묘(種苗)를 구명(究明)하고자 충북 지방재래종을 공시하여 10a당 퇴비(堆肥) 1.000kg, N - $P_2O_5\;-\;K_2O$=8 - 4 - 4kg을 시용(施用)하였고 종자직파, 1년생 종근(種根) 및 3년생 종근(種根) 등 ,3처리(處理)를 휴폭(畦幅) 50cm, 주간(株間) 10cm로 하여 시험을 수행(遂行)한 결과를 요약하면 다음과 같다. 1. 출아기(出芽期)는 3년생 종근(種根) 5월 14일에 비하여 종자직파는 3일 빨랐고, 1년생 종근(種根)은 같았으며, 만장(蔓長)은 3년생 종근(種根) 279cm에 비하여 종자직파는 16cm 1년생 종근(種根)은 26cm가 각각 길었다. 2. 뿌리굵기는 3년생 종근(種根) 1.0cm에 비하여 종자직파는 0.4cm, 1년생 종근(種根)은 0.5cm가 각각 굵었으며, 근장(根長)은 3년생(年生) 종근(種根) 32.2cm에 비(比)하여 종자직파(種子直播)는 7.2cm가 짧았고 1년생(年生) 종근(種根)은 0.6cm가 길었다. 3. 10a당 총(總) 수량(收量)은 3년생 종근(種根) 1,403kg에 비하여 종자직파는 29%, 1년생 종근(種根)은 55% 증수(增收)하였고, 상품 수량은 3년생 종(種)근 507kg에 비하여 종자직파는 14%, 1년생 종근은 17%가 각각 증수되어 백하수오(白何首烏) 재배시(栽培時) 적합(適合)한 종묘(種苗)는 직파 또는 1년간 육묘(育苗)하여 정식(定植)하는 것이 유리하였다.