(Reuters) - A health official takes the body temperatures of arriving travellers at Tribhuwan International airport in Kathmandu June 30, 2009. Nepal confirmed on Monday its first cases of H1N1 flu virus, in three members of a family who had returned from the United States, the Himalayan nation's health ministry said. REUTERS/Gopal Chitrakar (NEPAL HEALTH)

(Reuters) - A health official takes the body temperature of a monk arriving at Tribhuwan International airport in Kathmandu June 30, 2009. Nepal confirmed on Monday its first cases of H1N1 flu virus, in three members of a family who had returned from the United States, the Himalayan nation's health ministry said. REUTERS/Gopal Chitrakar (NEPAL HEALTH)

(AFP) - Rice farmer : A Nepalese farmer smiles as she plants rice in a field on the outskirts of Kathmandu. (AFP/Prakash Mathema)

(AP) - Nepali farmers plant at a paddy in Goldhunga village, about 20 kilometers (12 miles) from Katmandu, Nepal, June, 29, 2009. Farmers are celebrating 'Ashar Pandra' today, the auspicious day for planting paddy in Hindu culture. (AP Photo/Binod Joshi)

(Reuters) - Farmers drink water in a paddy field in the village of Godavari during the Asar Pandhra festival near Kathmandu June 29, 2009. Farmers celebrate the festival to mark the planting of the rice crop. Rice is the staple food of most Nepalese. REUTERS/Deepa Shrestha (NEPAL AGRICULTURE SOCIETY)

(Reuters) - A farmer wipes mud from her face in a paddy field in the village of Godavari during the Asar Pandhra festival near Kathmandu June 29, 2009. Farmers celebrate the festival to mark the planting of the rice crop. Rice is the staple food of most Nepalese. REUTERS/Deepa Shrestha (NEPAL AGRICULTURE FOOD SOCIETY)

(AP) - Nepali farmers smoke cigarettes as they take a break from paddy transplantation at a field in Goldhunga village, about 20 kilometers (12 miles) from Katmandu, Nepal, June, 29, 2009. Farmers are celebrating 'Ashar Pandra' today, the auspicious day for planting paddy in Hindu culture. (AP Photo/Binod Joshi)

(Reuters) - A farmer splashes mud in a paddy field in the village of Godavari during the Asar Pandhra festival near Kathmandu June 29, 2009. Farmers celebrate the festival to mark the planting of the rice crop. Rice is the staple food of most Nepalese. REUTERS/Deepa Shrestha (NEPAL AGRICULTURE FOOD SOCIETY)

(AP) - Children play with sludge at a paddy field in Goldhunga village, about 20 kilometers (12 miles) from Katmandu, Nepal, Monday, June, 29, 2009. Nepali farmers are celebrating 'ashar pandra' today, the auspicious day for planting paddy in Hindu culture. (AP Photo/Binod Joshi)

(Reuters) - Farmers splash mud in a paddy field in the village of Godavari during the Asar Pandhra festival near Kathmandu June 29, 2009. Farmers celebrate the festival to mark the planting of the rice crop. Rice is the staple food of most Nepalese. REUTERS/Deepa Shrestha (NEPAL AGRICULTURE FOOD SOCIETY)