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yield gain
相关语句
  增产量
     The yield gain of unit fertilizer decreased as the amount of fertilizer applied increased.
     单位化肥增产量随施肥量的增加而降低;
短句来源
  “yield gain”译为未确定词的双语例句
     On the benefit of soil conservation and yield gain in sloping field under different controlling measures
     论坡耕地不同治理措施的保土增产效益
短句来源
     The effect of potassium application on yield gain in brown purple soil was not significant.
     同一土类不同土属施钾效应有差异, 紫色土类棕紫泥上施钾效应不显著。
短句来源
     The yearly yield increase by using virusfree sweetpotato averaged 35.22% based on trials conducted in 55 locations across 5 provinces during 1991~1995. Virusfree varieties can be used for 2~3 years before reinfection brings about the yield gain close to nil. Virusfree sweetpotato also increased the resistance to black spot and tar spot.
     1991~1995年5省55个试验点的试验结果表明,脱毒甘薯的增产效果年平均为35.22%,脱毒甘薯通常在生产中可使用2~3年,脱毒甘薯对黑斑病和黑痣病也有防治效果。
短句来源
     The yield gain order was as follow:yellow earth>alluvial soil>purple soil.
     土壤类型不同, 其施钾效应不同, 增产效应依次为: 黄壤> 潮土> 紫色土。
短句来源
  相似匹配句对
     The relative genetic gain of root yield is the greatest.
     相对遗传进度以根产量为最大,其次为褐斑病发病级数;
短句来源
     Suza no. 3 could gain high yield.
     ③苏杂3号产量水平高,子棉单产3 359.4 kg/hm2,比对照泗棉3号增产15.14%;
短句来源
     and the yield raised.
     并有一定的防虫增产效果。
     The yield is 65%.
     产品收率为65%。
短句来源
     LOSS AND GAIN
     得与失
短句来源
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  yield gain
The selection response was measured by scoring the percent disease index at flowering, 15 days after flowering, and at physiological maturity and by quantifying economic yield gain.
      
These results confirm that neither high-yield environments nor environments in which the heritability of yield is maximized are necessarily optimum when the goal is to maximize yield gain in stress environments.
      
The reciprocal recurrent selection variety cross yield gain was estimated at 3.5% per year (7%/cycle) and that of the best ear-to-row procedure at 2.6% per year.
      
The average realized yield gain per selection cycle was 15% or higher in both populations.
      
The analysis has provided the relationship between the investment cost and the yield gain factor, the returns from the crop, as well as the savings in energy and the size of the prime mover with regard to the size of the farm.
      
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It has been planting and appraising 115 varieties of barley which were introduced from foreign country and other province since 1983. The high-yield and high-Quality variety-Humai No. 4 was selected. Through four years experiments it is revealed that Humai No. 4 got 200--270kg per mu under different natural conditions in Guangxi. It is high resistant to lodging and stress tolerance. Grain quality satisfied the requirements of beer-brewage. The growing period of this variety became shorter with the latitute...

It has been planting and appraising 115 varieties of barley which were introduced from foreign country and other province since 1983. The high-yield and high-Quality variety-Humai No. 4 was selected. Through four years experiments it is revealed that Humai No. 4 got 200--270kg per mu under different natural conditions in Guangxi. It is high resistant to lodging and stress tolerance. Grain quality satisfied the requirements of beer-brewage. The growing period of this variety became shorter with the latitute reduced but the required summation of temperature is limited at a stable value, i. e. about 1760℃. There are a clear turning point between the seeding time and yield gained. The yield reduced obviously when it was sowed after November 25. The results also indicated that it was suitable when the basic number of seedling was in the tange of 100--150 thousands per mu, and the yield got highest when the effective panicles reached 333 thousands per mu.

自1983年以来,引进区外和国外115个大麦品种进行试种鉴定,筛选出高产优质的啤酒大麦品种——沪麦4号。四年的试种表明,该品种在我区不同自然生态条件下,亩产可达200~270公斤,同时具有较强的抗倒性和抗逆性,其品质完全符合酿制啤酒的要求。沪麦4号的生育期随纬度的降低而缩短,但所需的积温则基本处于一个稳定值,即1760℃左右。播种期和产量的关系有一个明显的转折点,11月25日以后播种,产量明显下降。适宜的群体结构基本苗为10—15万/亩左右,有效穗在33万/亩左右产量最高。

The practical effect of the indices composed of yield and yield components was studied in 1985 and 1986. The results showed that the specific indices were better than direct yield selection(DYS). Among them, I_1, I_6 and I_7 which were not estimated from the selectin-acted population were best. The non-specific index Ⅰ constructed from the pooled variance-covariance matrix (PVCM) of F_4 to F_7 of the two crosses was better than DYS. But the non-specific index Ⅱ from PVCM of hybrid and land...

The practical effect of the indices composed of yield and yield components was studied in 1985 and 1986. The results showed that the specific indices were better than direct yield selection(DYS). Among them, I_1, I_6 and I_7 which were not estimated from the selectin-acted population were best. The non-specific index Ⅰ constructed from the pooled variance-covariance matrix (PVCM) of F_4 to F_7 of the two crosses was better than DYS. But the non-specific index Ⅱ from PVCM of hybrid and land cultivar populations in the literature cited was not so good as DYS. However, the realized yield gains of all indices appeared to be not consistent with, even less than the theoretical eXPectation. In the improvement for yield, the indices with yield seemed to be less effective than those without yield. Thus, the indices without yield were recommended to be used in the stage.

本文研究了不同选择指数用于杂种株行产量选择的实际效果。在较低的选择强度下,不包括产量的特殊指数和两种非特殊指数Ⅰ的实际选择效果,均比直接产量选择法好,而两种非特殊指数Ⅱ相应较差。包括产量指数的实际选择效果则低于或近于对应不包括产量的指数。建议应用不包括产量的指数作株行选择,选择强度以较低为宜。各指数的实际进度均不能由理论进度作可靠的预测。

Twenty-four plus trees from several local varieties were studied over a period of six years.Of them three clones, i.e.No.77, No.73, and No.74 were singled out, considering mainly the oil output of each individual tree and the tree form. The three superior clones have shown an annual gnretic yield gain by 44 per cent.

根据选种目标,从各地优良地方品种中选择,收集了24个优良单株,经连续6年的无性系测定分析,以单株产油量为主要评选指标;结合树体结构,从中评选出77、73、74号3个优良无性系,其历年产量的遗传增益达44%以上。

 
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