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为了做好苗木供应计划和编制苗圃下年度的育苗工作计划,在秋季起苗前,必须进行苗木产量的调查。苗木产量调查,应根据树种,育苗方法、苗木的种类和苗木的年龄等分制选出有代表性的标准地进行调查。标准地的总面积应占同一树种、同一育苗方法总面积的2—4%。如苗木生长比较整齐,标准地面积应选2%;当苗木高低、粗细很不一致时,则标准地面积应选4%。调查的项目主要有苗高和地径,针叶树还要调查有无顶芽。此外,应掘起少数有代表性的苗木,了解根系生长情况。调查的方法,常用的有下列二种:
In order to make seedling supply plan and plan nursery next year’s nursery work plan, seedlings must be surveyed before autumn seeding. Seedling production survey, should be based on tree species, nursery methods, the type of seedlings and the age of seedlings elected representative representative of the standard for investigation. The total area of the standard should account for the same species, with 2-4% of the total area of the same breeding method. Such as seedlings grow more tidy, the standard area should be selected 2%; when the seedling height, thickness is very inconsistent, then the standard area should be selected 4%. The main items surveyed were seedling height and diameter, and conifers were also investigated for the presence or absence of top buds. In addition, a few representative seedlings should be excavated to understand the root growth. Survey methods commonly used in the following two: