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First, lack of agricultural resources
Modern agriculture for the sake of higher production, cultivation methods with high investment, but in the case of limited resources such as fertilizers, water, need to low demand bred varieties, improved cultivation methods and other methods to strive for improvement. In terms of water consumption, humans consumed 4 litres a day about 3000-5000 liters of water to produce 1 kg of rice, rice water some spill into the groundwater, but if it can be of high quality rice varieties bred to low water consumption, good conservation of water resources.
Second, the impact of climate change
Phenomena caused by climate change have different interpretations, but the stress caused by certain effects on rice production, demand bred resistance (tolerance) to adversity, cultivating robust plant cultivation method and so on in order to cope.
Which one do you like rice?
Three, agro-ecological change
Modern agricultural high cultivation has resulted in changes in agro-ecological, such as a high-nitrogen fertilizer application on soil microbial environmental effects such as, hysteresis phenomenon has affected crop growth and yield, for premeditated methods in order to improve.
Four, the impact of trade liberalization on small countries
Has developed major agricultural countries relying on its low-cost advantage with the banner of trade liberalization, countries dumping agricultural products for small farmers, seriously affect Japan, China and other smallholder agricultural development of the country, in addition to political negotiation means, need to seek diversification and high quality methods, such as in agriculture as a result.
The data source
Changhua County Dacun junior high school, Taiwan.
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