【摘要】 针对黄淮地区夏大豆产量低而不稳的状况,通过苏、鲁、豫、皖四省三年24万亩丰产栽培开发性试验,提出“七五”期间提高黄淮地区大豆产量,应以提高单产为主,相应恢复一定的面积,在栽培技术措施方面,重点突出早、全、匀、壮四苗;初花期追施速效氮肥与深沟畦田化种植等三项重点措施。并相应提出最高叶面积指数在4.5—5.5,生物产量亩产472—525 kg的夏大豆,籽粒产量为亩产150 kg的生理指标。更多还原

【Abstract】 The Huang Huai River Valley is one of the two main regions for soybean production in China. The yield of summer soybean in this region is low and unstable. To increase the yield per mu is the most feasible way for the promotion of soybean production in this region.Comprehensive agrotechniques were practised for getting high summer soybean yield on eight experimental field of eighty thousand mu in the Huang Huai River Valley on 1983-1985 by the Academy of Agricultural Sciences of Jiangsu, Henan,Shandong and Anhui provinces. The average yield was 144.1 kg per mu,which was 93.7% higher than the average of the three previous years. The test was carried for 5.16 million mu in the neighbourhood area and the yield were 16.9 kg/mu higher than the planned yield. The inerease of table income was 1550 million yuan from the entire experimental field in 1983-1985.Beside favorable climat condition,the main season of yield increase is that the adaption of the following comprehensive agrotech-niques: (1)Improved planting method and earlin seedling even stand and low missing seedling, and strong seedling; (2)Applied nitrogen at the beginning of blowering; (3) Improved the soybean field for irrigation and drainage condition.The significance of possitive correlation of summer soybean yield of 15o0kg per mu with main physiological index such as population leaf area,maximum leaf area index(4.5-5.5), biological yield (472-525kg). had been discussed.更多还原