研究掌握黑核桃实生苗和嫁接苗的培育技术，能极大地提高苗木质量和生产效率，降低生产成本。
Studying and mastering techniques of cultivating seedlings and grafting seedlings can greatly raise seedling quality, productivity and reduction of productive cost.
研究掌握黑核桃实生苗和嫁接苗的培育技术，能极大地提高苗木质量和生产效率，降低生产成本。
Studying and mastering techniques of cultivating seedlings and grafting seedlings can greatly raise seedling quality, productivity and reduction of productive cost.
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