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。