Effects of skip-row planting on grain yield and quality of mechanized ratoon rice

Chang, Zheng; Wang, Yuechao; Yuan, Shen; Yu, Xiang; Yang, Guodong; Yang, Chen; Yang, Desheng; Wang, Fei; Huang, Jikun; Peng, Shaobing

doi:10.1016/j.fcr.2022.108584

Cited by 14 publications

(3 citation statements)

References 38 publications

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“… Shiraki et al (2020) reported that yield in the dry regime during this period was higher by 69% than that in the saturated regime, and indicated that soil oxidation conditions during the initial growth period of ratoons could contribute to the improved yield of ratoon crops. Furthermore, soil drying also mitigates yield loss in the ratoon crop due to damage by crushing of the stubble remaining after mechanical harvesting of the main crop ( Zheng et al, 2022 ). Thus, for varietal screening, it is important that varieties having similar crop duration can be grown together so that water conditions are the same before harvesting across the varieties to be tested.…”

Section: Discussionmentioning

confidence: 99%

Ratoon rice research: Review and prospect for the tropics

Saito,

Dossou-Yovo,

Ibrahim

2024

Field Crops Research

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Section: Discussionmentioning

confidence: 99%

Ratoon rice research: Review and prospect for the tropics

Saito,

Dossou-Yovo,

Ibrahim

2024

Field Crops Research

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“…The mechanized harvesting of regenerative rice technology has always been difficult in the case of rice. Zheng et al (2022) adopted a skip-row planting approach in order to provide a path for the harvester and avoid crushing damage. Compared with the traditional model, the substantial decrease in planting density did not impact grain yield to any notable degree, it did not present an obstacle to effectively increasing the level of mechanical harvesting of regenerated rice.…”

Section: Discussionmentioning

confidence: 99%

Effects of mechanical differences in sugarcane on the quality of mechanical harvesting

Li¹,

Li²,

Lin³

et al. 2023

Int. Agrophys.

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The mechanization of the whole process of sugarcane harvesting is an integral part of reducing the cost of sugarcane production. In order to select sugarcane strains suitable for mechanized harvesting, in this experiment, a dynamic resistance strain gauge and other equipment determined the related mechanical property parameters such as density, elastic modulus, and Poisson's ratio of different sugarcane varieties. Ansys/ explicit dynamics were used to establish a finite element model of the disc cutting device and to simulate the forces exerted on the stalk during sugarcane harvesting and also the quality of the cut section. Then, after obtaining the regression equation analysis and the response surface through the cross-section mass, the field harvesting experiment verifies the simulation results. The results show that the density, elastic modulus, and Poisson's ratio significantly affect the cutting quality within the three types of mechanical parameters. Through response surface analysis, when the elastic modulus is 92 MPa, the density is 1145 kg m -3 , the Poisson's ratio is 0.404, the best cutting quality was obtained, and the section flatness is 57.09%. According to the cross-sectional regression equation, the calculation results are as follows: Liucheng 05-136 > Yuetang 94-128 > Guitang 42, which is the same as the actual harvest quality results under the two planting modes. This indicated that the difference in the mechanical properties of the sugarcane would significantly affect the quality of mechanical harvesting, which provides a reference direction for selecting sugarcane varieties suitable for mechanized harvesting.K e y w o r d s: elastic modulus, Poisson's ratio, mechanized harvesting, finite element

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“…There was a great controversy over whether wide-narrow row allocation could improve rice yield. Some studies reported that the suitable wide-narrow row allocation can make full use of crop-marginal superiority, optimize population ventilation and light transmittance conditions, form excellent canopy structure at heading stage, increase light absorption rate of lower leaves, enhance photosynthetic efficiency of unit leaf area, improve dry matter accumulation and harvest index in during rice middle and late growth stages, and increase rice yield on the basis of increasing spikelets per panicle and filled-grain percentage [10,33]. Another study found that the advantage of wide row side was not as prominent as predicted, and did not present obvious advantages over equal-row geometry.…”

Section: Effects Of Planting Geometry On Grain Yield Photosynthetic M...mentioning

confidence: 99%

Effects of Mechanical Transplanting Methods and Planting Geometry on Yield Formation and Canopy Structure of Indica Rice under Rice-Crayfish Rotation

Dou

Guo

et al. 2022

Agriculture

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The rice–crayfish continuous production system developed rapidly due to its high economic benefits and eco-friendly nature in China. This study explored the effects of mechanically transplanted methods and planting geometry on the relationship between rice yield and canopy structure, under rice-crayfish rotation using excellent-quality indica rice, and carried out in 2018 and 2019. Three mechanical transplantation methods were set as follows: carpet seedlings mechanically transplanted with 30 cm equal row spacing (CMTE), pot seedlings mechanically transplanted with narrow row spacing with alternating 23 cm/33 cm wide row spacing (PMTWN), and equal row spacing at 28 cm (PMTE). Different plant spacings (CMTE1-CMTE6, PMTWN1-PMTWN6, PMTE3, and PMTE4) were set in accordance with different mechanical transplanting methods. CMTE and PMTWN both included six transplanting densities, while PMTE included 2 transplanting densities. Results showed that rice yield was improved by 2.87–6.59% under PMTWN when compared to CMTE, which was mainly due to the increase in spikelets per panicle and filled-grain percentage. Dry matter accumulation was increased and larger leaf area indexes were observed under PMTWN than CMTE at the rice main growth stage. Yield of CMTE and PMTWN treatments increased at first and then declined with decreased planting density. Under suitable planting density, PMTWN could optimize rice population structure and increase rice yield compared with PMTE. For tested rice variety, pot seedlings were mechanically transplanted alternating alternating 23 cm/33 cm wide row spacing, combined with a plant spacing of 16.8 cm, was proper for its yield improvement under rice-crayfish rotation.

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Effects of skip-row planting on grain yield and quality of mechanized ratoon rice

Cited by 14 publications

References 38 publications

Ratoon rice research: Review and prospect for the tropics

Ratoon rice research: Review and prospect for the tropics

Effects of mechanical differences in sugarcane on the quality of mechanical harvesting

Effects of Mechanical Transplanting Methods and Planting Geometry on Yield Formation and Canopy Structure of Indica Rice under Rice-Crayfish Rotation

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