论文部分内容阅读
大麦产量由穗数,粒数与粒重三因素构成,其中穗数是指有效穗,即由基本苗与早生分蘖穗共同组成,在产量构成中起主导作用。实践证明:苗穗过多,个体生长弱,容易倒伏,不利高产稳产;反之,苗穗不足也不利于高产稳产。因此,只有个体发育与群体结构协调,才能夺得丰产。为了寻找合理的苗穗结构,现将1988～1995年以来我县开展三级办方中667平方米产量达350公斤(幅度320～380公斤)的大麦攻关田与试验田材料汇总分述如下,从中找出苗穗协调发展的动态指标,以帮助指导大田生产实践并夺取高产稳产。
Barley production by the number of spikes, grain number and grain weight of three factors, including the number of spikes is the effective panicle, which consists of basic seedlings and early panicle tillers spike, play a leading role in the composition of the yield. Practice has proved that: too much spike, the individual growth is weak, prone to lodging, adverse high yield and stable; the other hand, lack of spike is not conducive to high and stable yield. Therefore, only individual development and coordination of group structure can win high yields. In order to find a reasonable ear structure, we now 1988 to 1995 to carry out three-tier operation of 667 square meters in our county yield of 350 kg (range 320 to 380 kg) of barley attack field and experimental field materials summarized below, from which Identify the dynamic indicators of the coordinated development of the panicle to help guide field production practices and to seize high and stable yield.