It was more profitable to export the crops.

The formation of planting industry of African export cash crops

非洲出口经济作物种植业的形成

Export crops include coffee, palm products, tea, rubber, and cotton.

出口产品包括咖啡、棕榈、茶叶、橡胶和棉花。

Brill says it goes back to the 1980s and 90s, when the United States, the World Bank and the International Monetary Fund encouraged developing countries to import grain produced cheaply in the U.S. and elsewhere and to focus their farming on export crops.

布里尔说，这要从1980和1990年代说起。美国、世界银行和国际货币基金组织当时都鼓励发展中国家进口美国和其他国家的廉价小麦，本国农业只要集中耕种出口作物就行。

The undisturbed soil of the saline-alkaline grassland had the characteristics of hard soil, poor permeability, weak preserving water capacity, and the inhibition for the growth of the grass and the crop, so the produced potentiality of the crop did not adequately play.

盐碱化草原的原状土土壤坚硬而密实，土壤通透性差，涵养水分能力弱，对牧草和作物的生长发育具有抑制作用，作物的产出潜能也不能得到充分发挥。

The relation between fading cropland and returning forest ( grass) and crop production in north of Shaanxi

陕北退耕还林还草与粮食生产的思考

Grass and crop rotation could increase the quantity of soil microorganism, intensify its activation, improve soil enzyme activity, enhance biological activity of soil and establish better soil environment condition.

草田轮作可以增加土壤微生物的数量，增强微生物的总体活性，也可以增加土壤的酶活性，进而提高土壤的生物活性，改善土壤的环境条件。

Nutritive evaluation of common grass forage crop for dairy cattle in Heilongjiang

黑龙江省主要栽培的禾本科牧草对奶牛的营养价值评价

The Ecological Effect of Grass and Crop Rotation on Ridge Chernozem

岗平地黑土草田轮作的生态效应

The effect of grass-crop rotation on crop yield increase

草田轮作对粮食作物的增产效应

Sugarcane is an important sugar and energy crop. In sugarcane production, nitrogen fertilizer and water are two most important factors.

甘蔗是重要的糖料作物和能源作物，在甘蔗栽培中，氮肥和水分是两个最重要的因子。

Though China has comparative advantages in the sugar crop ( sugarcane and beet) production, but it is confronted with enormous impact of importing sugar at the same time.

中国虽然在糖料（甘蔗和甜菜）作物生产上具有比较优势，但同时却面临进口食糖的巨大冲击。

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。

Local agricultural producers report that standing water could destroy up to half of next year's sugar crop.

地方农业生产者的报告，站在水可以破坏到明年的食糖产量的一半。

Local agricultural producers report that standing water could half of next year's sugar crop.

当地农业生产者报道称，不断上升的水位将会摧毁明年超过一半的糖类作物。

Sugarcane is the most important sugar crop worldwide, breeding of new varieties is essential for the development of sugar industry.

甘蔗是世界主要糖料作物，甘蔗新品种选育对蔗糖业发展具有重要意义。

Sugarcane is the most important cane sugar crop in the world and China.

甘蔗是全球和我国最重要的糖料作物，甘蔗糖业是全国糖业的支柱。

Pepper is the second largest vegetable crop in China.

是世界性重要的蔬菜和加工调味品，为我国第二大蔬菜作物。

However, little information has been obtained on the important vegetable crop tomato.

但作为全球重要的蔬菜作物番茄，有关信息却微乎其微。

The heading Chinese cabbage is an important vegetable crop in China.

大白菜原产于我国，是我国重要的蔬菜作物。

Advance in Photosynthesis of Vegetable Crop

蔬菜作物光合作用研究进展