For 14 CIMMYT maize population, 56 hybridized combinations were made by using incomplete dual cross.
对来自CIMMYT的14份玉米群体，按不完全双列杂交组配56个杂交组合。
For 12 domestic maize population, 48 hybridized combinations were made by using incomplete dual cross.
对国内12份有代表性的玉米群体材料，按不完全双列杂交组配48个杂交组合。
To study the quality improvement of maize population is significantly for the development of germplasm and quality improvement .
研究群体的品质改良，对拓展我国玉米种质基础及改善品质含量具有重大意义。
The effects of light distribution in maize population on grain yield and quality were studied by determining the light distribution character among different plant densities.
通过测定不同种植密度玉米群体的光能分布，研究了群体光能分布特征对玉米产量和品质的影响。
After all, population growth is slowing and yields of some crops, notably maize, are still rising at a steady pace.
毕竟，人口的增长在减速，而某些农作物的产量，特别是玉米，仍在以一个稳定的速率增长。
"Maize happens to be one crop in Africa that is consumed by more than half of the population, and it is badly affected by drought," he said.
“玉米作为非洲一半以上人口的主要粮食作物，其产量受到干旱的严重影响，”他说。
On one reckoning, in order to keep up with population growth farmers will have to grow more wheat and maize over the next 40 years than was grown in the previous 500.
一方面，为了迎合人口增长，农民在未来40年里种植的小麦和玉米必须超过过去500年的产量。
Two inbred lines of maize, ZA5716 and ZA6192, with high combining ability and disease resistance, were obtained from a breeding population improved by recurrent selection.
从轮回选择法改良的玉米育种群体中，选育出了配合力高、抗病性强的玉米新自交系za5716和ZA6192。
The effect of several pesticides on wheat aphids and their natural enemies as well as on pests and natural enemies population in maize field was tested indoors and in the field.
在室内和田间测试了几种杀虫剂对麦蚜、天敌及后茬玉米田主要害虫与天敌种群的影响。
Consumption of wheat, rice and maize roughly tracks population growth but at a higher level, so demand for them will add about a billion tonnes to the 2 billion produced in 2005-07.
小麦、稻谷和玉米的消费增长大致与人口增长持平，只是总量发生变化而已。因此，粮食需求将在2005- 2007年生产的20亿吨基础上再增加10亿吨。
Consumption of wheat, rice and maize roughly tracks population growth but at a higher level, so demand for them will add about a billion tonnes to the 2 billion produced in 2005-07.
小麦、稻谷和玉米的消费增长大致与人口增长持平，只是总量发生变化而已。因此，粮食需求将在2005- 2007年生产的20亿吨基础上再增加10亿吨。
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