Research & Development on Wheat No-Tillage Seeders in Annual Double Cropping System in Central China
There are about 15Mha irrigated crop land adopted wheat-maize (tow crops in a year) cropping system in central China. The adoption of conservation tillage in these areas has significant resource, environmental and economy benefits. However, no- tillage seeding wheat in maize residue field in central China was very difficult due to tough maize root and narrow wheat row space. Some foreign wheat no-till seeders have strong anti-blockage ability, but they are heavy (765-1130 kg/m) and expensive. From 1997, we started the research on lighter and cheaper wheat no-till seeder. Through 10 year efforts, 3 kinds of anti-blockage devices and 2 kinds of openers have been designed. Furthermore, 3 kinds of wheat no-till seeders have been developed through the using of these devices. They are: Strip rotary hoe minimum-till seeder, Strip chop no-till seeder and Oblique driven disc no-till seeder. These three kinds of no-tillage wheat seeds with 316-500 kg/m of unit weight are suitable for Chinese middle size tractor (500-650 kg/m), while the prices are only 10- 15％ of foreign no-tillage wheat seeders. At end of 2006, the double cropping CT system has been extended to 420,000 hectares, which resulted in 5.5％ and 7.2％ higher wheat and maize yields, over 20％ less operation cost, 20-30％ less fuel consumption and 10- 15％ less irrigation water.
Conservation tillage Double cropping No-till wheat seeder
Li Hongwen Gao Huanwen Yao Zonglu Li Wenying Zhang Xuemin He Jin Ma Hongliang
College of Engineering, China Agricultural University. P. O. Box 46, Beijing, 100083, China
国际会议
郑州
英文
16-21
2007-10-01（万方平台首次上网日期，不代表论文的发表时间）