2007, Volume 9, Issue 9
Strategic Study of CAE >> 2007, Volume 9, Issue 9
Study on the Light No-till Seeders With High Anti-blockage Performance
China Agricultural University, Beijing 100083, China
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Abstract
The first performance of the no -till seeder is to avoid the stalk blockage while seeding. To solve the blockage problem, oversea no-till seeders mostly rely on heavy weight (760-1130 kg/m) or big size. But those seeders are not suitable for Chinese conditions of small land size, small tractor and weak left force (300~600 kg/m), and are expensive as well. After 10 year efforts since 1990, light passive anti-blockage no-till seeders were developed and largely applied to the middle and low yield regions. However, the anti-blockage performance of the seeders is limited, difficult to work in the high yield region. From 1998, 3 types of light and active anti-blockage no-till seeders, strip rotary hoe, strip chopping and power driven disk no- till seeders, have been developed. Those seeders have strong anti-blockage ability, and can directly seed wheat on the heavy maize stalk mulching field. The unit weight is 316~500 kg/m, which can matchdomestic tractors. The price is 1/8 of oversea no-till seeders. From the planting quality test of 3 no-till seeders in 2004~2006, the light active anti-blockage no-till seeders have shown more soil disturbance and power consuming than oversea no-till seeders, but had advantages of wheat emergence, seedling growth and wheat yield. Nearly 20, 000 pieces of the light & high anti- blockage no-till seeders have been applied to the direct seeding wheat in maize stalk mulching field of 400, 000 hm2 in 2006, resulted resources saving, environment protection and farmer benefits increasing.
Keywords
active anti-blockage ; no-till seeder ; light seeder ; conservation tillage ; direct seeding wheat
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