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根据江苏省农业三项工程项目实施的需要,2004～2005年我们在铜山县稻麦原种场针对不同播种量对稻套麦群体质量及产量的影响等问题进行了试验研究。结果表明:不同播量对稻套麦群体质量及产量的影响各有不同。随着播量的增加,群体质量逐步变差;每亩穗数不断增加,但分蘖成穗率及单株成穗数则不断减少,穗型变小,穗粒数明显减少,千粒重变化不大。淮北地区稻套麦要夺取500kg/666.7m2左右的单产,基本苗以18.0/666.7m2万左右为宜,适宜播量为14.0kg/666.7m2左右。
According to the needs of implementation of the three agricultural projects in Jiangsu Province, 2004-2005 we conducted trial research on the effects of different sowing rates on the quality and yield of paddy sets of wheat in the primary and secondary rice fields in Tongshan County. The results showed that the effects of different sowing rates on the quality and yield of paddy rice were different. With the increase of sowing quantity, the quality of the population gradually became worse; the number of spike per acre increased continuously, but the rate of tillering spike and the number of spike per plant decreased continuously, the panicle size became smaller, the number of grains per spike reduced obviously, . Huaibei rice to capture 500kg / 666.7m2 about the yield, the basic seed to 18.0 / 666.7m2 million is appropriate, the appropriate sowing rate of about 14.0kg / 666.7m2.