water retaining and slowly-release fertility
...大学农业化学调控中心 关键词：保水缓释肥 板蓝根 节水保肥 [gap=612]Key words: water retaining and slowly-release fertility; Isatis tinctoria; preserving wateand and nutrients ..
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短语
保水缓释氮肥
water-absorbent slow release nitrogen fertilizer
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