crop production

The results reveal that land is the most important factor in crop production in China.

研究表明，从我国农业生产投入结构看，土地在农作物生产中的作用极为显著，是今后我国提高农产品生产的主要制约因素；

Study of expert system model for assisted-decision of crop production

作物生产辅助决策专家系统模型研究

Exotic weeds have caused serious harm to crop production, orchards, lawns, environment and biodiversity in Liang-shan.

外来杂草已对凉山州的农作物生产 、 果园 、 草坪 、 环境和生物多样性等造成了严重危害.

Significance and Function of Biodiversity in Crop Production of Farmland

生物多样性及其在农田作物生产中的意义和作用

Warmer winter benefits the cash crop production, such as cut flowers and out of season vegetables.

暖冬有利于鲜切花和反错季节蔬菜等作物的增效增收, 但同时冬季作物冻害的风险损失加大,应加强预防.

Either fertilizer or water is important factors which influence crop production.

水、肥是影响农业生产的两个重要因素。

A Model Bank on the Technical Decision of Crop Production System and Its Application

农作物栽培技术系统决策模型库及其应用

Retrospect and Prospects of Farm Machinery System Optimization Based on Crop Production

农场种植业农业机器优化系统研究的回顾与展望

A review on theoretical models and development of yield analysis in crop production system

论作物生产系统产量分析的理论模式及其发展

This strategy will encourage more crop production to ensure food security.

这项策略将推进农业生产以真正实现粮食安全.

Climate change is affecting weather patterns, crop production, island nations, cities and species survival.

气候变化影响到天气类型 、 作物生产 、 岛国 、 城市和种类生存.

Accumulation and translocation of lead in soil-crop system of green food production

绿色食品生产中土壤作物系统铅的积累与迁移研究

Relationship between Crop Production and Water Use

作物生产和水分利用的关系

So increasing forage crop production is approach of the cropping system adjustment in this area.

因此,大力发展饲料粮生产是今后黄土高原种植业结构调整的必然方向.

Aluminum ( Al ) toxicity is one of the major limitations to crop production on acidic soils.

摘要铝毒是影响酸性红壤上作物生长的重要限制因子之一.

The Significance and the Test of Mathematical Model of Crop Production

作物生产数学模型的意义及其检验

Cyhalothrin was the most toxic, with an LC50 of 0.6786 mg/ kg, indicating a toxicity more than 140 times that of acephate. Cyhalothrin could be recommended for use in crop production.

氯氟氰菊酯的毒力最高，LC50为0.6786mg/kg，比乙酰甲胺磷高140倍，在生产上可推荐使用。

Exotic weeds have caused serious harm to crop production, orchards, lawns, environment and biodiversity in China.

外来杂草已对我国的农作物生产 、 果园 、 草坪 、 环境和生物多样性等造成了严重危害.

Sugar prices owing to the crop production nationwide.

白糖价格上涨的主要原因是本榨季全国性的减产.

China is an ancient agricultural country with a long history of crop production.

我国是个农业古国，农业生产历史悠久。

Structural adjustment for crop production was continued.

种植业结构继续调整.

Nitrogen is the most common and important nutritious element for crop production.

氮素是影响作物生产最为普遍和施用量最大的营养元素。

On the basis of the biomass and productivity research, and by means of calorimetry measurement, the standing crop of energy, net energy production and energy conversing efficiency of Pinus taiwanensis community were determined.

在生物量、生产力研究的基础上，通过干重热值测定，对黄山松（Pinus taiwanensis）群落的能量现存量、能量净固定量及太阳能转化效率进行分析讨论。

Floristic disease is one of the major limited factors in crop production.

植物病害是农业生产的主要限制因子之一。

Screening of the Key Factors of Increasing Crop Production by Orthogonal Design

正交试验法筛选风砂土上作物增产的关键因子

Position and function of forage crops in crop production regions

试论农区人工牧草的地位和功能

Dynamic interrelations of crop production, water consumption and water use efficiency

作物生产、水分消耗与水分利用效率间的动态联系

The crop represents a tiny fraction of U.S. production.

农作物仅占美国出产物极小的一部分。

Based on the introduction of information technique, the paper has summarized its application to agricultural resources, environment, crop production, technique research and extension, agricultural disasters and economic management.

在阐明信息技术的基础上，总结了信息技术在我国农业资源与环境、农业生产、技术研究与推广、农业灾害及经济管理中的应用和前景。

Air pollution causes breathing problems. It also threatens crop production in farm areas near huge cities.

空气污染引起了呼吸道的问题, 同时也威胁着大城市附近的农业区农作物的产量.