摘要
Abstract
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.关键词
施氮量/迟播/播种量/越优1203Key words
Nitrogen application amount/Late sowing/Sowing amount/Yueyou 1203分类
园艺学与植物营养学
