crop yield造句

crop yield per capita

Crop identification is the basic work in crop yield estimation.

Blackened circles denote accumulated temperatures and open ones crop yield.

Implementation of the appropriate yield-protection factors insures that the maximum crop yield is harvested.

the study of plant nutrition and growth especially as a way to increase crop yield.

The result clearly showed that the effect of potash application on crop yield was significant.

Analysis on the effect of controlled drainage and supplemental irrigation on crop yield and drainage

Through the field investigation, relationships between shelterbelt structure and crop yield were discussed.

A new method for calculating fair crop yield premium rate and premium

But no matter how much we maximize crop yield per acre, the limiting factor for food production is land.

Lobell put the climate data from various regions together with the crop yield information from the same areas.

Effects of different fertilizing modes on soil environment quality and crop yield of kailyard were studied through field experiment.

The study of plant nutrition and growth as related to soil condition, especially to determine ways to increase crop yield.

In the agricultural production, the application of fine variety to increase crop yield is an economic and feasible way.

Because of the erratic rainfall patterns in Australia, it is often considered that soil moisture sets the upper limit on crop yield potential.

Another control option might be the use of a herbicide early in the growing season to remove the weeds before competition reduces crop yield.

Previous researchers through conventional field observation methods had proved that to increase fertilizer input was the key measure to enhance soil carbon sequestration and crop yield-increasing.

Through a series of soil investigation and fertilizing experiment, the relationship between crop yield and the soil fundamental fertility has been revealed in the clayey carbonate meadow soil.

The paper inquired into the characteristic, system architecture of spatial data warehouse and valued crop yield estimation methods we have now.

In land scarce area, methods to increase cropping index, increase crop yield and increase planting area of wheat and sweat potato are adopted in order to increase food energy production.

Abstr: soil surface mulching is an important measure on moisture conservation for dry farming. It is beneficial to improve crop yield, but there is a dispute on soil conservation.

Perhaps the weather is bad and the crop yield is very low. Villagers shout to increase grain production all day long. As a result, only the production of staple food can barely sustain the village's needs.

Developing biogas in countryside can exploit energy resources, and its fermentation residue can be used as organic fertilizer, which can not only improve soil fertilization, but also improve crop yield and quality.

And can improve crop quality and shiny appearance of the crop, roots developed, greatly increased crop yields, is the vast peasant friends get rich right-hand man.

Crop rotation plus fertilizer application produces the highest crop yields and maintains the highest soil N and organic matter levels.

This year's crop yielded 1,000 bushels of corn.

Effects of farmland application of sewage sludge on crop yields and heavy metal accumulation in soil and crop

And because it washes away rich topsoil, erosion can threaten crop yields.