a yield index的意思|示意

A field study was conducted to determine the relationships between Crop Water Stress Index (CWSI), yield, and quality of cotton under drip irrigation with mulch.

通过田间试验，研究了膜下滴灌棉花的作物产量、品质和作物缺水指标(CWSI)定量关系。

A quantitative drought index is necessary for soil water management and crop yield evaluation.

农田水分管理以及产量评估都需要对土壤作物受旱状况定量化和指标化。

Stocks Index Futures is the major tool for the investors' hedging, by putting stock index futures on a fall, to reach the goal of avoiding risk and locking yield.

股指期货是投资者进行套期保值的主要工具，通过做空股指期货，可以达到规避系统性风险和锁定收益的目的。

The yield gap between conventional and index-linked Treasuries, a measure of inflation expectations, has risen by more than 0.3 percentage points this year.

作为通胀预期的指标，传统国库券和与物价指数挂钩的国库券之间的经济收益差额，今年已经上升超过了0.3%。

For a given rice variety, the crop harvest index, which is calculated by the grain yield divided by total dry matter produced above ground, may vary with crop management practices used.

对于给定的水稻品种，作物收获指数(由籽粒产量除以地上部分总干物重求得)可能随作物管理措施不同而变化。

The average yield of every 3 ~ 4 a from a single twig and from an individual could also be employed as an index for early stage selection of new clones.

利用3 ~ 4年单枝结果数和单株产果量的平均值作为高产胶优良无性系早期选择的标准。