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一、前言水稻是我国主要粮食作物之一,稻米是我国人民的主要食粮。水稻的播种面积和总产量均居各种作物首位,据统计我国水稻播种而积约占粮食作物播种面积四分之一强,而产量约占粮食作物总产量的二分之一。我省五千多万亩耕地中,四千多万亩用于种水稻,产量占粮食总产量的90%。水稻育秧移栽是目前数量最大的一种常规栽培方式。育秧的播种工艺均采用人手撒播,撒播的质量取决于撒播者撒播技术。由于采用撒播芽种,芽与根相互牵连,同时播种量大(200斤以上),一般播种均匀性较差,撒播量不易控制。’
I. Introduction Rice is one of the main food crops in our country. Rice is the main food for our people. The sown area and total output of rice rank first in all kinds of crops. According to the statistics, about one-quarter of the sown area of grain crops in China is estimated to be sown by rice, while the output accounts for about one-half of the total output of grain crops. Of the more than 50 million mu of arable land in our province, more than 40 million mu are used for planting rice, and the output accounts for 90% of the total grain output. Transplanting rice seedlings is currently the largest number of a conventional cultivation methods. Sowing seedlings are sown by manpower, sowing depends on the quality of sowing broadcast technology. As a result of the use of sowing buds, buds and root mutual implicated, while planting a large amount (200 pounds and above), the general poor sowing uniformity, spreading sowing is not easy to control. ’