Australian farmers interests in disc seeders increased due to their ability to operate at higher speeds（up to 20 km/h） and sow at narrower row spacing under high crop residue environment（Ashworth et al., 2010）. This allows for improved timeliness, leading to more uniform crop maturity and increased crop competition against weeds. Successful operation is greatly dependant on the disc design, operating environment and soil conditions at the critical time of sowing. For example, wet soil conditions coupled with inappropriate design such as low clearance between various components and inefficient scraper designs may cause many disc systems to fail in wet heavy clay soils. Disc seeders have ability to cut through heavy stubbles in no-till and stubble retention situation. However, their ability to incorporate herbicides is limited due to low soil disturbance. Australian grain growers are divided over the use of disc or tine sowing technologies under various soil types, sowing conditions, farming systems, crop rotations and stubble retention. Grain Research and Development Corporation（GRDC） held a number of farmers meeting to raise these issues with farmers. As an outcome of these meetings, the GRDC funded a range of research projects aimed at assessing the pros and cons of disc seeding technology in Australian context. The research undertaken in Australia showed very promising result for improving soil scoring and herbicide incorporation abilities of disc seeders through bionic modification.
类型: 国际会议
作者: Rashid Qaisrani,Jianqiao Li
来源: 第六届国际仿生工程学术大会暨2019年自然启迪科技国际研讨会 2019-09-23
年度: 2019
分类: 基础科学,农业科技
专业: 生物学,农业工程
单位: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University
分类号: S223.2;Q811
DOI: 10.26914/c.cnkihy.2019.063690
页码: 70
总页数: 1
文件大小: 136k
下载量: 1
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