American walnut,black walnut是什么意思

用法例句

Study on Grafting Techniques of Juglans nigra;

美国黑核桃嫁接育苗技术研究

A Primary Research on Lifting Law of Different Strains of Juglans nigra;

黑核桃不同品系出苗规律初步研究

Study on the Aboveland Part s Growth Law of Juglans nigra Seedling;

美国黑核桃实生幼苗地上部分生长规律研究

Conditions and days of stratification of east America black walnut seeds were tested,The results showed,after they had been soaked for 5 days in cold water and been stratified for 150 days,the seeds could germinate early.

对美国东部黑核桃种子层积催芽前预处理方法和层积催芽时间进行了试验,认为层积催芽前冷水浸种5d,沙藏层积催芽150d,发芽最快。

Based on the investigation on 15 species of insect pests infecting American black walnut,the paper introduces the life history and bionomics of 5 species of important insect pests and provides the concrete control measures.

文章报道河南危害美国黑核桃的 1 5种害虫。

The vacuoles were for the first time isolated from the mycorthizal fungi (Amanita muscaria and Cenococcum geophilum) by the polybase, DEAED-dextron, induced lysis of protoplasts.

从菌根真菌黑核菌（ＣｅｎｏｃｏｃｃｕｍｇｅｏｐｈｉｌｕｍＦｒ。

Screening of Suitable Sowing Period of Juglans nigra L.at Linzhi Area of Tibet;

西藏林芝地区美国黑核桃适播期选择

Inter-Specific Crossing Experiment Between Juglans nigra L. and Juglans regia L.;

美国黑核桃与中国核桃种间杂交试验初报

A primary investigation is conducted on fruiting habit of 14 improved variety clones of Juglans nigra L.

对美国黑核桃 1 4个良种无性系的结果习性进行了初步调查。