苦荞麦品种'六苦荞6号'的选育、农艺特性及栽培技术OA

This article systematically introduces the breeding process,characteristics and cultivation management techniques of'Liukuqiao No.6'.This variety was developed by using radiation mutagenesis and through systematic selection breeding on'Liukuqiao No.3'as the parent.It was approved by the Crop Variety Approval Committee of Guizhou Province in 2023(approval number:Qianrenliang 20220003).The entire growth period of this variety is 88 days.It has strong disease resistance,drought resistance and lodging resistance.The protein content of its seeds was 12.70 g/100 g.The average yield in the variety comparison test in 2018 was 153.20 kg/667 m2,and the yield increase rate in the regional trials from 2019 to 2020 was 75%.The average yield in the buckwheat display in 2020 was 206.10 kg/667 m2.The key points of cultivation techniques for this variety include choosing soil with rich humus,stable granular structure,and good water retention and aeration;sowing by row when the soil moisture is good,with a sowing rate of 4-5 kg/667 m2;for fields with average soil fertility,applying 500-800 kg/667 m2 of organic fertilizer,2 kg/667 m2 of potassium fertilizer,and 25 kg/667 m2 of phosphorus fertilizer as base fertilizer,and avoiding the use of chlorine-containing fertilizers;weeding and thinning at the 3-leaf and 1-heart to 4-leaf and 1-heart stage;and using a combination of agricultural control(rational crop rotation and fertilization),biological control(extracts of aromatic plants and biological agents such as Beauveria and Metarhizium),and chemical control(mancozeb,phoxim and isocarbophos root irrigation)to comprehensively control diseases and pests such as damping-off,downy mildew,wireworms and aphids.Harvest when more than 80%of the seeds on the plant reach maturity,and dry the seeds to a moisture content of≤13%for storage under dry conditions.This article provides practical references for the further promotion and application of this variety.