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利用容器育苗技术,在温室内进行了‘青林’核桃种子容器育苗试验,研究了核桃种子的出苗规律,并对苗木生长过程进行了初步探讨与分析。结果表明:‘青林’核桃容器育苗的发芽率为97.0%,出苗率为90.3%,苗木生长整齐,出苗期较短;苗木生长可分为出苗期、幼嫩期、速生期和苗木硬化期4个时期;1年生苗木苗高、地径出现两次生长速生期:第一次苗高、地径速生期为3月下旬~4月上旬,第二次苗高速生期在7月中旬~8月中旬,地径速生期在8月上旬~8月下旬,地径速生期滞后于苗高生长20 d左右;苗高、地径的生长符合“S”形生长曲线;1年生容器播种苗干鲜重之比为0.494,地上与地下部分鲜重之比为1.072,地上与地下部分干重之比为0.915。
Using container seedling raising technique, seedlings of ’Qinglin’ walnut seedling were tested in greenhouse. The seedling emergence rules of walnut were studied. The growth and development of seedlings were also discussed and analyzed. The results showed that the germination rate of ’Qinglin’ walnut seedlings was 97.0% and the germination rate was 90.3%. The seedlings grew neatly and the emergence period was short. The growth of seedlings could be divided into seedling stage, young stage, fast growing stage and seedling hardening stage 4 times; 1-year-old seedling height, diameter appeared twice growing fast-growing period: the first seedling height, rapid transit time for the late March to early April, the second seedling high-speed life in mid-July ~ In the middle of August, the rapid transit of soil diameter was in the first ten days of August to the late of August, and lasted behind the rapid growth of soil height by about 20 days. The growth of seedling height and diameter accords with the “S” shape growth curve; The ratio of dry weight of sown seedlings was 0.494, the ratio of fresh weight to aboveground part was 1.072, and the ratio of dry weight to aboveground part was 0.915.