under crop

Because of the enterprise and sugar crop farms are separately management, bargaining cost is high, the market risk is great, special assets under-capitalize.

对制糖企业与糖料农户人为地分隔开来进行多头管理，交易成本高、市场风险大、专用性资产投资不足。

Study on Uptake and Distribution of Nitrogen, Phosphorus and Potassium of Solar Greenhouse Cucumber under Different Crop

不同茬口日光温室黄瓜对氮磷钾吸收分配规律的研究

The surface is in general level, and about three-fourths are under crop.

地面大致平坦, 并且大约有3∕4的地种着庄稼.

The study on shading effect under poplar crop intercropping system

杨粮间作系统中林木遮荫作用研究

The results show as the followings: Hg obviously inhibited soil urease activity and crop root activity under soil crop agricultural system;

结果表明，在土壤&植物体系中，汞对土壤脲酶和作物根系活力具有明显的抑制作用，且土壤脲酶和根系活力对汞的应答是一致的；

Long-term Change of Phosphorus in Soils under Wheat-Maize Crop Rotation in China

小麦&玉米轮作土壤磷素长期演变规律研究

A field experiment was conducted to study the growth and water use efficiency of rice crop cultivated under flood and non flood soil mulched with different materials throughout the whole growing season.

通过田间试验研究水作水稻和不同地表覆盖旱作水稻的生长和水分利用效率。

Under conventional crop management condition, wheat grain yield was affected significantly by soil organic matter and spike number per acreage.

研究发现，在目前的冬小麦-夏玉米轮作体系中，土壤有机质含量和单位面积有效穗数是影响冬小麦产量的主要因素，而生长天数则是影响玉米产量的主要因素。

Study on Distribution of Nitrate-N in Chao Soil and Reasonable Application of N Fertilizer under the Crop Rotation System of Winter Wheat and Corn

小麦-玉米轮作制度下潮土硝态氮的分布及合理施氮肥研究

The Indian government is trying to reduce area under the crop in line with developed countries to cut tobacco consumption.

印度政府正在试图减少烟草种植面积，以便与减少烟草消费的发达国家保持一致。