英汉例句

• grain yield per unit area and irrigation are the most important factors among all influencing factors and the application of chemical fertilizer is the secondary factor.

  在影响河北省粮食总产的诸因素中，粮食单产和灌溉是决定粮食总产的首要因素，而化肥施用量则为次要因素。

• we will effectively keep the area planted with grain crops stable, focus on increasing the yield per unit area and optimizing the variety mix, and increase the country「s grain production capacity.

  我们要切实稳定种植面积，着力提高单产，优化品种结构，推进全国新增粮食生产能力建设。

• the phenotypic and genetic correlations between grain yield per unit area and protein percentage were -0.50 and -0.90 respectively.

  籽粒产量和蛋白质含量的表型相关系数约为-0.50，而遗传相关系数高达-0.90。

• 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。

• in 1959, various factors such as reduction of sown areas, less yield per unit area and natural disasters contributed to the decrease in grain output.

  1959年开始，由于播种面积减少、单产下降、自然灾害等原因，粮食产量连年下滑。

• there is potential for increasing the yield per unit area on the existing cultivated land.

  提高现在耕地单位面积产量有可能。

• furthermore, in the r5 stage, stem dry weight, the content of sucrose, total content of amino acid per unit area and yield per unit area were positive correlation significantly.

  在r5期，单位面积茎干重、单位面积蔗糖和氨基酸总含量与单位面积产量呈显着正相关。

• china has been the world」s second largest corn producer since 1996, corn production and yield per unit area than wheat ranking cereal crops second place.

  我国是世界上第二大玉米生产国，自1996年后，玉米总产量和单位面积产量超过小麦，居禾谷类作物的第二位。

• the paper puts forward the quantization formula by regarding fictitious yield per unit area as one way of contrasting and evaluating the economic results of aquaculture.

  本文提出以虚拟单位产量作为比较与评价水产养殖经济效果的一种方法，给出了量化公式。

• since 1987, late rice is planted in extensive area. the meteorological factors influencing the variation of grain yield per unit area from 1987 on differ obviously with those before 1987.

  1987年大面积种植单季晚稻以来，影响粮食单位面积产量变化的气象条件与1987年之前有着明显的差异。

• the first assignment of development wheat production is raising yield per unit area and improving quality, and the varieties improvement can not do well without innovation of new wheat germplasm.

  发展小麦生产的首要任务是在现有品种的基础上提高单产和改良品质，而品种改良离不开种质资源的创新。

• to increase the grain yield per unit area and to enlarge the planting area are two important measures to keep the sustainable grain yield increase.

  提高单产和扩大播种面积是我国粮食总产持续增长的两个重要方面。

• an important method of increasing rice yield per unit area is to improve the rice-planting mechanization lever and use advanced planting technology.

  提高水稻单产的一项重要措施是提高水稻种植机械化水平，即采用先进的种植技术。