目前我国低产麦田仍然占播种面积的1/3—1/2,由于种种原因使小麦产量长期徘徊在200—300斤左右。尽快提高低产麦田小麦产量,则具有十分重要意义。关于低产麦田的主攻目标,学者之间说法不一,有的认为主要是亩穗数,其次千粒重;有的认为主要是千粒重,还有的认为主要是亩穗数,其次穗粒数,其他认为三者(亩穗数,穗粒数,千粒重)并举等。 At present, China’s low-yielding wheat fields still account for 1 / 3-1 / 2 of the sown area. Due to various reasons, the output of wheat has hovered around 200-300 kg for a long time. As soon as possible to improve wheat yield in low-yield wheat fields, it is of great significance. There are different opinions among academics about the main target of low-yielding wheat fields. Some believe that the main problem is the number of ears per acre, followed by the value of 1000-grain weight. Some think it is mainly 1000-grain weight. Others think that it is mainly the number of ears per acre, and the number of grains per spike. Three (acres of spikes, grains per spike, 1000-grain weight) simultaneously.