水稻钵盘精量播种装置长短粒芽种播种试验研究

为优化水稻钵盘精量播种机有关参数及提高播种性能,利用水稻钵盘精量播种机,通过二次正交旋转回归分析,分别以水稻品种为空育131(短粒)、垦鉴3号(长粒)为研究对象,建立了型孔直径、型孔厚度、种箱速度与性能指标间的非线性回归模型。结果表明:水稻品种为短粒时,对播种合格率和损伤率影响的主次因素均为型孔直径、型孔厚度、种箱速度;当水稻品种为长粒时,影响播种合格率和损伤率的主次因素不同,分别为型孔厚度、种箱速度、型孔直径(长粒)和型孔直径、种箱速度、型孔厚度(长粒),确定较优参数组合为10mm、4mm和0.2 9 0 m/s(短粒);1 1 mm、4 mm和0.2 4 0 m/s(长粒)。此时,播种合格率9 4.8 1%、损伤率0.4 7 9%(短粒);播种合格率95.37%、损伤率0.368%(长粒)。研究结果可为水稻钵盘精量播种机设计与性能改进提供依据。

Experiments on Rice Bowl Dish Precision Seeder Long and Short Paddy Grain in Seeding Processing

In order to optimize the parameters of the rice Bowl-dish precise seeder to improve the plant performance , the three factors five levels quadratic orthogonal rotational regression experiment has been conducted by using rice bowl -dish precise seeder , studying the effect on seeding rate and the damage rate by the shaped hole diameter , shaped hole thick-ness , seed box speed .Empty test is commonly used in Heilongjiang province rice varieties kongyu 131 ( long grain ) and kenjian3(short grain),The results shows that the order of factors affecting rice seeding rate is the type of hole diameter , shaped hole thickness , seed box speed ( short grain ) , shaped hole thickness , seed box speed , the type of hole diameter ( long grain); the order of factors affecting rice injury rate is the type of hole diameter , shaped hole thickness , seed box speed ( short grain ) , the type of hole diameter , seed box speed , shaped hole thickness ( long grain ) .The result including more optimal parameters(the type of hole diameter is 10mm, shaped hole thickness 4mm; seed box speed 0.290m/s (short grain) and the type of hole diameter is 11mm, shaped hole thickness 4mm; seed box speed 0.240m/s(long grain ) respectively ) and performance indicators ( the seeding rate is 94 .81%;damage rate 0 .479%( short grain ) and the seeding rate is 95.37%;damage rate 0.368%(long grain) )provide the basis for design and performance improvement of bowl-dish precision seeder .