研究高产作物的新品种
Research new varieties of high-yield crops
以上为机器翻译结果，长、整句建议使用 人工翻译 。
评述不同镁肥在近两年中的研究开发动向和应用，包括镁肥新品种以及对不同作物高产量和改进品质方面的进展。
The research, development and application of various kinds of magnesium fertilizers in recent 2 years, as well as their roles on improving yield and quality for crops are reviewed.
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