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目前,我国多数采用以室外畦田育苗的栽培方式,而多年来室外畦田育苗一直是人工播种.这种人工播种耗力多,播种质量差,不利于机插.为了满足水田地区生产队实现早春畦田苗床播种实现机械化的急需,我们研制了人力水稻苗床播种机(图1),并先后在一些农场作了性能试验和生产考核,其生产率为330米~2/小时,比人工提高工效10倍左右,而生产可靠性系数达97%,纵向不稳定性为2%.播种均匀性也良好,以2×2.5(厘米~2)为测量单位时,3～9粒区占85.5%,纵向均匀度变异系数为5.5%,横向均匀度变
At present, most of the cultivars are cultivated in outdoor field nursery field, and outdoor nursery field nursery has been artificial sowing for many years.This kind of manual seeding has many disadvantages, such as poor sowing quality and poor planting quality.In order to meet the needs of field production team in paddy fields, In order to meet the urgent need of mechanization, we have developed a manpower rice seedbed planter (Figure 1) and conducted performance tests and production tests on some farms successively. The productivity is about 330 m 2 / h, which is about 10 times more labor-intensive than that of artificial planting , While the reliability coefficient of production was 97% and the longitudinal instability was 2%. The sowing uniformity was also good. When the unit was 2 × 2.5 (cm ~ 2), the area of 3 ~ 9 grains accounted for 85.5% The coefficient of variation is 5.5% and the horizontal uniformity is variable