In the model, the leaf area index (LAI), crop coefficients, and root penetration and distribution were simulated for the winter wheat and summer corn double cropping system.

模型对冬小麦—夏玉米轮作体系作物叶面积指数、作物系数、根系生长与分布进行了模拟。

youdao

Based on simulated model of JiangNan Double Crop rice, growth and development status of early rice effected only by climate condition in ChangDe Area from1961to2000were simulated respectively.

以江南双季稻生长评估模型为工具，模拟了常德地区1961 - 2000年早稻的生长状况。

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Through the qualitative test and performance test, it proved that the double hole can be used in precise seeding for tillering crop (such as wheat).

通过定性试验和性能试验，论证了复式型孔能够用于分蘖作物(小麦)的精量播种。

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And they say it can double or triple crop production.

VOA: special.2009.09.01

If adopted on a grand scale, the assessment argues, such techniques could double crop yields.

ECONOMIST: Financing water projects

This irrigation-efficient system, Khodpe was told, could double crop yields and save up to 60% of the water that flood irrigation methods consume.

FORBES: Magazine Article

The sweet potato is sub-Saharan Africa's first genetically modified crop, and its yields so far are double that of the regular plant.

FORBES: Millions Served