Better irrigation can dramatically improve crop yield and about 40% of the world's food supply is currently derived from irrigated land.

更好的灌溉可以显著提高作物产量；目前，全球约40%的粮食供应都来自于灌溉地。

In the early 1940s, basking in the glory of chemical-based intensive agriculture, the farmers avidly took to pesticides as a sure measure to boost crop yield.

在20世纪40年代早期，农民们沐浴在以化学品为基础的集约农业的光辉下，贪心地把杀虫剂当作增加作物产量的一种可靠方法。

Climatic analysis of the crop yield.

作物产量的气候分析。

Photosynthesis is the basis of crop yield.

光合作用是作物产量形成的基础。

Crop yield correlates closely with annual rainfall.

农作物的收成与年降雨量有密切关系。

Crop identification is the basic work in crop yield estimation.

作物识别是遥感作物估产的基础。

Ways of improving crop yield per unit area and the countermeasures.

提高作物单产的途径与对策。

The crop yield increases with the thickness of covered soil increasing.

作物产量也随复土厚度增加相应增加。

An operational method of crop yield disaster losses evaluation is introduced.

介绍了农作物产量灾害损失评估业务化方法。

How to break crop yield stagnation is a serious question warranting an explanation.

如何打破作物产量徘徊的局面是应找到答案的一个严重问题。

The study of plant nutrition and growth especially as a way to increase crop yield.

对植物营养与生长，特别是为增产的研究。

The requirement for K supply increases with the increasing of crop yield and quality.

随着农产品产量和品质的不断提高，作物对钾素的需要量也不断增加。

Soil salinity is one of chief environmental factors that limit the crop yield potential.

土壤盐渍化是降低农作物产量的主要环境因素之一。

Quantity of water supply of an area will directly influence the production of crop yield.

一个地区水量的充足与否直接影响该区农作物产量的高低。

They celebrate this holiday in hopes of fair weather and a good crop yield in the coming year.

人们庆祝这个节日，祈求一年风调雨顺好收成。

The result clearly showed that the effect of potash application on crop yield was significant.

结果表明季季连续施用氯化钾增产效果和效益都十分明显。

Nitrogen and water are major factors for maintaining crop yield, getting better economic return.

氮素和水分是维持水稻高产和获得较高经济效益的主要因素。

Coupling remote sensing data with crop growth models to predict crop yield is a hot research topic.

将遥感信息与作物生长模式结合来预测作物产量，是目前的一个热点研究课题。

But no matter how much we maximize crop yield per acre, the limiting factor for food production is land.

但是不管我们如何最大化粮食亩产量，最大的制约因素还是土地。

Lobell put the climate data from various regions together with the crop yield information from the same areas.

罗贝尔将各个地区的气象数据收集起来并整理了同地区的作物产量数据。

The soil humidity and fertilizer dosages are important factors that affect the farm crop yield and qualities.

土壤水分与肥料是影响作物产量与品质的重要因子。

Sometimes I measure irrigation and fertilization of a seeded area and follow it up with estimates of crop yield.

有时我测量灌溉，给撒种的土地施肥，然后跟踪并预测庄稼收成。

Can effectively complement crop boron element, increase crop resistance to significantly increase crop yield and quality.

可有效补充作物硼元素，增加作物抗逆性能，显著提高作物产量与品质。

Experimental results also indicated that sprinkler uniformity had little effect on crop yield for the studied range of CU.

试验结果还表明，在所研究的喷灌均匀系数范围内，均匀系数对产量的影响不明显。

The study of plant nutrition and growth as related to soil condition, especially to determine ways to increase crop yield .

农业生物学；土壤生物学关于植物养分和与土壤条件相关的生长的研究，尤其是对判定如何增加农作物产量方法的研究。

Consequently, rational use of water resource with high efficiency is the key step to achieve high crop yield with good quality.

高效合理地利用现有水资源，生产数量足够、品质优良的粮食是该地区农业生产的核心。

The term water production function does not reflect statistical characteristics of the relationship between crop yield and water.

作物水分生产函数的名称不能确切反映作物产量与水分关系的数学特点。