A technology of applying nitrogen fertilizer for high-yield and high-benefit on spring maize of paddy field in South China.

Countering the new water-dry rotation system that double croping of rice is changed by spring maize and hybrid late rice The researchers made experiments of different applying nitrogen fertilizer amount,different applying nitrogen fertilizer number of times and suitable time.The results showed that the best applying nitrogen fertilizer amount is 300kg/hm 2,It is simpler applying two time fertilizer (amount of foundation fertilizer is as much as fertilizer for head sprouting).Suitable time of applying fertilizer for head sprouting is during the 9th-10th leaver from the low.