The bad weather will affect the yield.

To be sure, raising yields is not the same as feeding the world.

平心而论 增加产量和养活全世界并不是一回事 如果大量人口无法负担生产出来的粮食 那么产量再大也无济于事 过去20年中 近十亿人口摆脱了贫困 根据世界银行的定义 贫困线是每天收入少于1.25美元 要让另一个十亿人口摆脱贫困就没有那么容易了

The Doppler information is displayed graphically using spectral Doppler, or as an image using color Doppler (directional Doppler) or power Doppler (non directional Doppler).

If a vast swath of the population cannot afford the food that is produced, the size of the yield is irrelevant.

These genetic modifications usually aim to reduce the amount of energy used to produce the product, increase yields and reduce the production of wastes.

But how can we compare these innovations with those like the laser, the transistor, the Turing machine, and the mapping of the human genome, each of which has led to a flood of transformative products?

But, while such competition would reveal new global scarcities, it would also bring higher prices, thereby encouraging producers to increase yields and productivity.

If water can be managed through irrigation, this could be combined with multi cropping (multiple harvests per year) to produce a crop during the dry season.

The solution is to increase grain yields to at least two tons and in some places to three or more tons per hectare. If water can be managed through irrigation, this could be combined with multi cropping (multiple harvests per year) to produce a crop during the dry season.

The solution is to increase grain yields to at least two tons and in some places to three or more tons per hectare.

In some areas, modestly warmer temperatures could produce higher crop yields if associated changes in precipitation patterns are not adverse and or irrigation remains viable.

But the Union of Concerned Scientists, in its report Recipes for Success, notes that the increased profits that accompany improved yields can spur further expansion of plantations.

The scientific revolution was made possible by the printing press, the industrial revolution by the steam engine, and India s escape from famine by increased farm yields the so called Green Revolution.

Indeed, the accelerating expansion of deserts will likely lead to a decrease of agricultural yields from the surrounding areas, acute deterioration of the availability of water, and possibly to further conflicts and displacement of people.

The world should set as a practical goal of doubling grain yields in low income Africa and similar regions (such as Haiti) during the next five years.

Compositional mapping and Io's high density suggest that Io contains little to no water, though small pockets of water ice or hydrated minerals have been tentatively identified, most notably on the northwest flank of the mountain Gish Bar Mons.

At the same time, these objectives, while pressing, should not obscure the need to focus on yields increases in which have accounted for three quarters of food production growth in recent decades.

By 2030, if the maize, or corn, varieties, which is the dominant crop 50 percent of the nutrition in Southern Africa are still in the field in 2030, we'll have a 30 percent decrease in production of maize because of the climate change already in 2030.