5WANG C. Response of rice yield to deep placement of fertilizerand nitrogen top-dressing during panicle initiation stage and itsdiagnosis of fertilizer application[J]. Taiwan Residents Journal of Ag-ricultural Chemistry and Food Science, 2004,42(5) : 383-395.
6ANDO H,KAKUDA K, NAKAYAMA M,et al. Yield of notillage direct-seeded lowland rice as influenced by differentsources and application methods of fertilizer nitrogen[J], SoilScience and Plant Nutrition,2000,46(1) : 105-115.
7BAUTISTA E U, SUMINISTRADO D C, KOIKE M. Mechan-ical deep placement of fertilizer in puddled soils: evaluation ofnitrogen losses and yield of transplanted and direct-seeded rice[J]. Journal of the Japanese Society of Agricultural Machiner-y,2000,62(1):146-157.
9BAUTISTA U,KOIKE M,SUMINISTRADO D C. PM— power and machinery: mechanical deep placement of nitrc^en in wetland rice[J], Journal of Agricultural Engineering Research, 2001,78(4): 333-346.
10WANG C H. Response of rice yield to deep placement of fertilizer and nitrogen top-dressing during panicle initiation stage and its diagnosis of fertilizer application[J], Taiwan Residents Journalof Agricultural Chemistry and Food Science,2004,42(5) :383-395.
