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Paddy field
Terrace of paddy fields in Yunnan Province, southern People's Republic of China. 
Planting rice in Bangladesh 
Paddy fields in southern India. 
Rice terraces in Longji, Guangxi, People's Republic of China. 
Paddy field prior to planting, in Taiwan Paddy fields can be built adjacent to otherwise natural areas such as rivers or marshes. They can be constructed, often on steep hillsides with much labor and materials. The fields require large quantities of water for irrigation. Flooding provides water essential to the growth of the crop. Water also provides a favorable environment for the rice strains being grown as well as discouraging the growth of many species of weeds. The water buffalo is the only draft animal adapted for life in wetlands so they are extensively used in paddy fields. Growing rice has an adverse environmental impact because of the large quantities of methane gas it generates. World methane production due to paddy fields has been estimated to be in the range of 50 to 100 million tonnes per annum.[1] This level of greenhouse gas generation is a large component of the global warming threat produced from an expanding human population. However, recent studies have shown that methane can be significantly reduced while also boosting crop yield by draining the paddies allowing the soil to aerate, which interrupts methane production.[2] The word "paddy" is derived from the Malay word padi, rice plant.[3]
HistoryArchaeologists generally accept that wet-field cultivation originated in China. At Caoxieshan, a site of the Neolithic Majiabang culture, archaeologists excavated paddy fields [4]. Some archaeologists claim that Caoxieshan may date to 4000-3000 B.C.[5][6], but as of now the oldest excavated rice paddy field dated by absolute scientific dating techniques are from Korea[7]. There is archaeological evidence that unhusked rice was stored for the military and for burial with the deceased from the Neolithic period to the Han Dynasty in China.[8] Korean paddy-field farming is ancient. A pit-house at the Daecheon-ni site yielded carbonized rice grains and radiocarbon dates indicating that rice cultivation in dry-fields may have begun as early as the Middle Jeulmun Pottery Period (c. 3500-2000 B.C.) in the Korean Peninsula[9]. Ancient paddy fields have been carefully unearthed in Korea by institutes such as Kyungnam University Museum (KUM) of Masan. They excavated paddy field features at the Geumcheon-ni Site near Miryang, South Gyeongsang Province. The paddy field feature was found next to a pit-house that is dated to the latter part of the Early Mumun Pottery Period (c. 1100-850 B.C.). KUM has conducted excavations that have revealed similarly dated paddy field features at Yaeum-dong and Okhyeon in modern-day Greater Ulsan[10]. The earliest Mumun features were usually located in low-lying narrow gullies that were naturally swampy and fed by the local stream system. Some Mumun paddy fields in flat areas were made of a series of squares and rectangles separated by bunds approximately 10 cm in height, while terraced paddy fields consisted of long irregular shapes that followed natural contours of the land at various levels[11][12]. Mumun Period rice farmers used all of the elements that are present in today's paddy fields such terracing, bunds, canals, and small reservoirs. We can grasp some paddy-field farming techniques of the Middle Mumun (c. 850-550 B.C.) from the well-preserved wooden tools excavated from archaeological rice fields at the Majeon-ni Site. However, iron tools for paddy-field farming were not introduced until sometime after 200 B.C. The spatial scale of paddy-fields increased with the regular use of iron tools in the Three Kingdoms of Korea Period (c. A.D. 300/400-668). The first paddy fields in Japan date to the Early Yayoi period[13]. The Early Yayoi has been re-dated and thus it appears that wet-field agriculture developed at approximately the same time as in the Korean peninsula. In the Philippines, the use of rice paddies can be traced to prehistoric times, as evidenced in the names of towns such as Pila, Laguna, whose name can be traced to the straight mounds of dirt that form the boundaries of the rice paddy, or "Pilapil." [14] Wet rice cultivation in Vietnam dates back to the Neolithic Hoa Binh culture and Bac Son culture [15] CultureIndonesia
Water buffalos are common tool to plough muddy paddy fields in Indonesia. Rice harvesting in Central Java is often performed not by owners or sharecroppers of paddy, but rather by itinerant middlemen, whose small firms specialize in harvesting, transport, milling, and distribution to markets. The fertile volcanic soil of much of the Indonesian archipelago-- and particularly the islands of Java and Bali-- has made rice a central dietary staple. Steep terrain on Bali resulted in intricate cooperation systems, locally called subak, to manage water storage and drainage for rice terraces.[16] ItalyRice is grown in northern Italy, especially in the valley of the river Po.[17] The paddy fields are irrigated by fast-flowing streams descending from the Alps. Risotto, a rice dish flavoured with saffron is a typical dish from the rice-growing area near Milan that has now travelled around the world. Japan
Paddy field scarecrows in Japan 
Rice transplanter in Japan The acidic soil conditions common in Japan due to volcanic eruptions have made the paddy field the most productive farming method. Paddy fields are represented by the kanji (commonly read as ta) that has had a strong influence on Japanese culture. 
Paddy fields near Lake Inawashiro in Japan Today, many family names have ta as a component, a practice which can be largely attributed to a government edict in the early Meiji Period requiring all Japanese people to have a family name. Many chose a name based on or near the place they lived or the job they had, and with nearly three fourths of population being farmers, many made family names using ta. Some common examples are Tanaka () and Nakata (), literally meaning "middle of paddy field," Kawada (??), "paddy field by a river," and Furuta (), "old paddy field." Korea
Paddy field near Namwon, South Korea, early June. The Chinese (or Sino-Korean) character for 'field', jeon (Hangeul: ?; Hanja: ?), is found in some place names, especially small farming townships and villages. However, the specific Korean term for 'paddy' is derived from Sino-Korean and is literally 'water-field' or sujeon (Hangeul: ??; Hanja: ??). MyanmarRice is grown primarily in three areas - the Ayeyarwaddy Delta, the area along and the delta of the Kaladan River, and the Central plains around Mandalay. Up til the later 1960s, Myanmar was the main exporter of rice. Termed the rice basket of South East Asia, much of the rice grown in Myanmar does not rely on fertilizers and pesticides, thus, although "organic" in a sense, it has been unable to cope with population growth and other rice economies which utilized fertilizers. Rice is now grown in all the three seasons of Myanmar, though primarily in the Monsoon season - from June to October. Rice grown in the delta areas rely heavily on the river water and sedimented minerals from the northern mountains, whilst the rice grown in the central regions require irrigation from the Ayeryarwaddy River. The fields are tilted when the first rains arrive - traditionally measured at 40 days after Thingyan, the Burmese New Year - around the beginning of June. In modern times, tractors are used, but traditionally, buffalos were employed. The rice plants are planted in nurseries and then transplanted, by hand into the prepared fields. The rice are then harvested in late November - "when the rice bends with age". Most of the rice planting and harvesting are done by hand. The rice are then trashed and stored, ready for the mills. Philippines
Paddy fields are a common sight in the Philippines. Several vast paddy fields exists in the provinces of Nueva Ecija, Isabela, Cagayan, Bulacan, etc. Nueva Ecija produces the biggest share of rice for national food security. Banaue rice terraces
Filipino farmer harrowing a flooded rice field; Luzon, Philippines 
Banaue Rice Terraces, Ifugao Province, Philippines Located at Barangay Batad in Banaue, the Batad Rice Terraces are shaped like an amphitheatre, and can be reached by a 12-kilometer ride from Banaue Hotel and a 2-hour hike uphill through mountain trails. The Bangaan Rice Terraces portray the typical Ifugao community, where the livelihood activities are within the village and its surroundings. The Bangaan Rice Terraces is accessible in a one-hour ride from Poblacion, Banaue, then a 20-minute trek down to the village. It can be viewed best from the road to Mayoyao. The Mayoyao Rice Terraces is located at Mayoyao, 44 kilometers away from Poblacion, Banaue. The town of Mayoyao lies in the midst of these rice terraces. All dikes are tiered with flat stones. The Hapao Rice Terraces can be reached within 55 kilometers from the capital town of Lagawe. Other Ifugao stone-walled rice terraces are located in the municipality of Hungduan.[18] Vietnam
A rice field in Vietnam The primary festival related to rice fields is "l? h? ?i?n" (Vietnamese)/"l?ng t?ng" (Tay language) in the first day of every crop wishing for yield more than usual. In the past, this was the official national ceremony that the King would make the first plough and people would worship Than Nong (god of agriculture), th? ??a (god of the soil), thành hoàng làng (god of the village), and th?n lúa (god of rice plants). During the Tr?n Dynasty, there were three kinds of rice field: ru?ng qu?c kh? (national budget rice field) with 3 levels, ru?ng thác ?i?n with 3 levels (the name derives from a story about Lê Ph?ng Hi?u. He refused the King's present for his feat of arms but required that how far he would throw his knife, how wide of the rice field he could possess. Since then, it's become the name of rice field for rewarding Vietnamese mandarins: thác ?ao- abbreviation: thác- throw the knife and ?i?n- rice field), and ru?ng ao of the common people. In Vietnamese literature, a rice field is described as wide enough for flock of storks to span their wings across: "??ng lúa th?ng cánh c̣ bay" and the sway of rice plants in the wind is compared to waves of the sea and called "sóng lúa". These images are very common phrases describing the beauty of the Vietnamese landscape. See also
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