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忠县水稻制种单产,现虽已达到155公斤,但与单产250公斤以上的先进县差距甚大。怎样才能尽快提高我县水稻制种单产呢?笔者认为增加母本有效穗,是提高水稻制种单产的一条有效途径。一、母本亩有效穗偏少,是我县水稻制种单产不能尽快提高的主要原因之一大家知道:产量=有效穗×穗实粒数×千粒重。即,产量与有效穗,穗实粒数,千粒重成正比,而有效穗则是穗实粒数,千粒重这两个产量因素的基础,有效穗在一定的范围内,穗粒数,千粒重的增减与亩有效穗的多少相关不明显;当亩有效穗超过一定的范围时,
Zhongxian rice seed production, although it has reached 155 kg, but with a yield of 250 kg or more advanced count on a wide gap. How can I improve rice production in our county as soon as possible? I believe that increasing the effective female ear, is to improve rice production of an effective way. First, the female ear less effective panicle spike, is my county rice seed yield can not be increased as soon as possible one of the main reasons we all know: Yield = effective spike × spike grain × 1000 grain weight. In other words, the yield is proportional to the effective panicles, the grains per panicle and the 1000-grain weight, while the effective panicles are the basis for the two grain yield factors, that is, the panicle number and the 1000-grain weight. The effective panicle is within a certain range. Less effective acres and the number of effective correlation is not obvious; when acres of effective spike over a certain range,