This paper attempts to draw a general relationship between crop yield loss and chewing injury of reproductive organs by insect pests.
本文试从分散的材料中概括出主要大田作物繁殖器官被害与产量损失之间的一般关系。
Quality and yield of crop were affected inevitably by agricultural habitat environment that has polluted, resulting in an agricultural economic loss, to bring risk of agricultural production.
农业产地环境受到污染势必影响农作物的质量和产量，造成农业经济损失，给农业生产带来风险。
The characteristics of soil and water loss and crop yield by cross ridge in purple soil of different sloping farmland were studied.
通过在紫色土坡耕地上进行横坡垄作，观测了不同坡度坡耕地的水土流失及作物产量状况。
The yield response of crop to phosphate fertilizer and organic manure and the loss risk of phosphorus in soil were studied using a long-term experiment.
采用磷肥和有机肥田间定位试验的作物产量效应和土壤积累磷的环境风险相结合的方法。
In recent years, rice bacterial foot-rot disease has happened in southern rice areas and was prevalent throughout Zhejiang province and caused a severe yield loss of rice crop.
水稻细菌性基腐病，近几年在南方稻区陆续发生，浙江各地为害渐趋严重，已给水稻生产带来较为严重威胁。
In recent years, rice bacterial foot-rot disease has happened in southern rice areas and was prevalent throughout Zhejiang province and caused a severe yield loss of rice crop.
水稻细菌性基腐病，近几年在南方稻区陆续发生，浙江各地为害渐趋严重，已给水稻生产带来较为严重威胁。
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