... 标准林分 normal stand 采种林分 nurse-crop; seed stand 成熟林分 mature forest stand; mature stand; ripe stand ...
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以上来源于: WordNet
Cover crop; nurse crop a companion crop grown to protect some other crop sown with it as small grain is sometimes seeded with clover.
护田作物；遮盖作物一种用同其它作物一起播种的作物，用来保护其它作物。例如三叶草有时和一些小粮食作物一起播种。
It is generally advantageous to sow pasture seeds with a companion grazing nurse crop.
一般在播种草种时，同时播种放牧保护作物是有好处的。
The triticale "NSHW11" had significantly decreased the number of weeds, increased total bio-yield and economic benefit of alfalfa when it was used as nurse crop of alfalfa field.
小黑麦“NSHW11”作为紫花苜蓿规模化种植的田间保护作物，具有明显的抑制杂草，增加总体生物量，提高苜蓿种植效益的作用。
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