The central theme of this paper is helping conduct farm-level
decisions including water and fertilizer application, with varied
planted crops in different farms, usually with small area.
Located in the Guangdong Province, China, with 113.5±4.0 east
longitude and 22.8±2.5 north latitude, Guangzhou City has a
total land area of 7400 km2. As one of the riches city in China,
it has a total output value of 1.072 billion US$ in industry and
12b in agriculture in 1993 (TCSB, 1993). Most of the area for
agriculture production covers the suburb region of the city and because the semitropical climate of the city meets required
living conditions of many crops, the cropping pattern is very
complex, with a large diversity of plants such as fruits, flowers,
vegetables and rice. In addition, a great part of area is
mountainous and this makes the farm field fragment, which
adds even more difficulty in farm-level decision-making as
water and fertilizer application.
The central theme of this paper is helping conduct farm-leveldecisions including water and fertilizer application, with variedplanted crops in different farms, usually with small area.Located in the Guangdong Province, China, with 113.5±4.0 eastlongitude and 22.8±2.5 north latitude, Guangzhou City has atotal land area of 7400 km2. As one of the riches city in China,it has a total output value of 1.072 billion US$ in industry and12b in agriculture in 1993 (TCSB, 1993). Most of the area foragriculture production covers the suburb region of the city and because the semitropical climate of the city meets requiredliving conditions of many crops, the cropping pattern is verycomplex, with a large diversity of plants such as fruits, flowers,vegetables and rice. In addition, a great part of area ismountainous and this makes the farm field fragment, whichadds even more difficulty in farm-level decision-making aswater and fertilizer application.
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