Virgate is a unit of land area.
威尔格是一个土地面积单位。
A Dutch and South African unit of land area equal to2.1acres.
摩肯荷兰和南非使用的土地面积单位，相当于2。1英亩。
There is potential for increasing the yield per unit area on the existing cultivated land.
提高现有耕地单位面积产量有潜力。
Higher density stands reach quatitive maturity earlier than lower density stands, the annual stem volume produced by unit land area of higher density stand is larger than that of lower density stands.
随着密度的增加，林分达到数量成熟期的年限变短，若以数量成熟期为采伐年限，则单位面积年均材积产量仍以高密度林分为最大。
Because of the diminishing opportunity to expand cultivated land, researches have been mostly focused on the rise of yield per unit area.
由于扩大耕地面积的可能性越来越小，研究已主要集中于提高单位面积产量。
Dutch and South African unit of land area equal to2.1 acres.
摩肯荷兰和南非使用的土地面积单位，相当于2。
A Dutch and South African unit of land area equal to2.1 acres.
摩肯荷兰和南非使用的土地面积单位，相当于2。
The population and the gross potential land resource are proportional to the arable land area and its unit productivity.
人口数量和土地资源生产力与耕地面积和土地单产潜力成正比。
Faced to tillage land resource reducing and large proportion of hilly fields, increasing yield per unit area must be done to meet the need of increasing population at present and in the future.
辽宁省耕地资源少、坡耕地比重大，满足现在和将来日益增长的人口需要，必须在保护好现有耕地面积基础上，提高单产。
The spikelets and the setting grains per panicle and effective panicle number per unit land area all decreased with the delay of seeding times.
这可能是由于播种期的推迟，每穗总粒数、每穗实粒数和有效穗显著降低。
The spikelets and the setting grains per panicle and effective panicle number per unit land area all decreased with the delay of seeding times.
这可能是由于播种期的推迟，每穗总粒数、每穗实粒数和有效穗显著降低。
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