Abstract
In order to promote the winter wheat yield and guarantee seeding quality in double-cropping system, no-tillage or reduced tillage planting modes with different row spacing have been implemented to result in different levels of yield. A three-year (2012-2015) field experiment was conducted on the experimental farm at Zhuozhou of Hebei Province in North China Plain to compare winter wheat yield from the two planting modes: wide-narrow row space planting mode (WN) and uniform row space planting mode (UR) Both planting modes were performed under reduced tillage conditions with straw mulching. The results showed that in North China Plain WN had positive impacts on crop yield, yield components, leaf area index (LAI) and intercepted photosynthetically active radiation (IPAR) index. Comparing with the UR, IPAR and LAI index for WN were enhanced by 4.8% and 5.2%, respectively. The average yield for WN was 7.2%, significantly greater than that of UR under the same quantity and density. In addition, for WN mode, machinery could pass through with less blocking under large amount of straw mulching, which largely improved tillage efficiency and potentially popularized the conservation tillage technology in North China plain. It is therefore recommended that wide-narrow row space planting mode (WN) combined with reduced tillage and straw mulching be more suitable for conservation tillage in double-cropping pattern areas in North China Plain. Keywords: winter wheat yield, wide-narrow seeding, conservation tillage, row spacing, LAI, IPAR DOI: 10.25165/j.ijabe.20181104.3399 Citation: Hu H N, Lu C Y, Wang Q J, Li H W, He J, Xu D J, et al. Influences of wide-narrow seeding on soil properties and winter wheat yields under conservation tillage in North China Plain. Int J Agric & Biol Eng, 2018; 11(4): 74–80.
Highlights
Long term traditional intensive agriculture has been demonstrated to reduce crop yields because of its resultant soil structure degradation and soil erosion
Conservation tillage which could increase water use efficiency, reduce wind and water erosion and decrease soil loss[3,4,5] was introduced. When it comes to the double-cropping pattern which has been adopted in China since 1980[6], seeding quality could not be guaranteed
Maize is seeded in early June, and harvested in mid-September, while winter wheat is immediately seeded in early October and harvested in the following June
Summary
Long term traditional intensive agriculture has been demonstrated to reduce crop yields because of its resultant soil structure degradation and soil erosion. Conservation tillage which could increase water use efficiency, reduce wind and water erosion and decrease soil loss[3,4,5] was introduced When it comes to the double-cropping pattern which has been adopted in China since 1980[6], seeding quality could not be guaranteed. The wide-narrow row spacing planting mode achieved by broadening the space between seeding device was proposed, for its potential for anti-blocking and increasing yield. Under this mode, only half numbers of former furrow openers are used to apply one row of fertilizer and seed two rows of wheat. In this way, planting density can be guaranteed while the wider distance between furrow openers enables the maize straw to flow through, which is able to solve the blocking issues and on the premise of guaranteed seeding quantity
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