Suitable Sowing Amount and Nitrogen Application of Yueyou 1203 for Late Sowing in Jinhua Area
To explore the green and efficient cultivation technology of late direct sowing of rapeseed in Jinhua area,new variety Yueyou 1203 was selected.We designed 6 nitrogen application amounts(0,135,180,225,270,315 kg/hm2)and 6 sowing amount(3.00,4.50,6.00,7.50,9.00,10.50 kg/hm2)to research the suitable sowing amount and nitrogen application of Yueyou 1203.Results showed that with the in-crease of nitrogen application,Yueyou 1203 sown in November 18 showed increasing trends in plant height,stem diameter,branch site,main inflorescence length,branching number,effective pods per plant and filled grains per pod.1 000-grain weight showed no significant changes,yield firstly enhanced and then decreased,6.00 kg/hm2 sowing amount had the highest yield.Thus,Yueyou 1203 under late sowing in Jinhua area should enhance nitrogen fertilizer and sowing amount.Nitrogen application amount should be at about 6.00 kg/hm2,which could balance yield,cost and green environmental protection.Sowing amount should be at about 225 kg/hm2,higher sowing amount could lead to yield de-crease.
国家科技期刊平台
NSTL
万方数据
维普
