1、the relation between rainfall and crop production

2、Structural adjustment for crop production was continued.

3、Effect of salinity soil improvement on crop production

4、Cover crop: a crop such as winter rye or clover planted between periods of regular crop production to prevent soil erosion and provide humus or nitrogen.

5、This is an approach to crop production that is based on three principles: permanent soil cover, minimum soil disturbance, and crop rotations or crop associations.

6、The future scenario of the ALMANAC model application to resource production potential investigation , crop cultivation optimization and crop production prediction affected by environmental changes is…

7、In rural India the group is assisting farmers with crop production.

8、Chilling injury is an important natural disaster in agricultural production, seriously affected crop production and geographical distribution.

9、Agronomy A branch of agriculture dealing with soil management and crop production.

10、Developing strategy of grain crop production in Loess Plateau Region of China.;

11、Comparison of crop production between native and non-native farm households in Shanghai suburbs;

12、A crop, such as winter rye or clover, planted between periods of regular crop production to prevent soil erosion and provide humus or nitrogen.

13、Turnip mosaic virus is a worldwide popular kind of plant virus, which caused serious damages to the crop production.

14、In an agricultural setting, the use of variety to increase crop production is an economic and simple way.

15、The development of biotechnology has brought new opportunities for development of crop production of sweet potato ( lpomoea batatas Lam. ).

16、The government's Payment-In-Kind (PIK) Program, introduced in the early 1980s, had a significant effect on crop production.

17、Clearing of land for feed crop production and expansion of pastures for livestock production has been one of the driving forces behind deforestation.

18、Employment rates increased: More efficient crop production on terraces and the diversification of agriculture and livestock production have brought about new on-farm and off-farm employment.

19、Pakistan is endowed with the climatic versatility, land suitability, water avahability and the appropriate technical knowledge on scientific crop production technology to produce high crop yields as can be seen from data in Table2.

20、Geminiviruses are a group of plant DNA viruses characterized by their unique twinned particles, and are currently emerging as a major threat to crop production worldwide.

21、In the years that followed, a green revolution drove crop production rapidly upward, while population growth slowed dramatically; Ehrlich's bomb, rather conspicuously, failed to go off.

22、The irrigation system can improve rainwater utilization efficiency in hilly land areas, and consequently promote increases of crop production and income of agriculture industry.

23、Being the uppermost productive material and the most direct object for farmers, cultivated land is one of the basic factors consisting of the comprehensive ability of crop production.

24、For example, the share of crop production sold in Vietnam varies from just 34 percent in the sparsely populated northern uplands to 88 percent in the area around Ho Chi Minh City.

25、Polluting soil, water source and air, these pollutants endanger the crop production and the health of human and animal, and even result in serious pollution of animal-husbandry products.

26、Agricultural land use plan shall be updated to readjust crop production structure, actively develop green agriculture, return the related farmland to forest and grassland and stop new reclamation for agricultural use.

27、The objective of this paper is to summarize noteworthy MYR achievements in Canada and to review advances in the development of best management practices( BMPs) for sustainable and environmentally protective crop production.

28、Waterlogging can be a frequent natural calamity for drought crop productions.