在农业生产上,对品种向来的要求之一是:生长整齐、成熟一致。今年早稻播种期间,我将两个不同的品种(一个为中熟不易落粒而较感病的不脱矮,一个为迟熟抗病的珍汕)的种子以七比三的比例有意地混合起来播种,并与不混播的品种进行对比试验。结果混播比单播不仅增产一成,而且比广陆矮4号等16个良种显著增产。这就有可能成为良种选用上的新苗头。混播比单播所以增产,是因为混播的不同品种之间生存竞争,造成株型疏散,通风透光 In agricultural production, one of the requirements of the species has always been: grow neatly, mature and consistent. During the early rice planting this year, I deliberately mixed seeds of two different cultivars, one that is less susceptible to shattering and less sensitive to disease, and one that is late maturing and disease resistant, in a ratio of seven to three Sow up, and do not mix sowing varieties for comparative testing. As a result, the mixed broadcast not only increased the yield by 10% but also significantly increased the yield of 16 elite cultivars such as Guanglu Dazao No.4. This is likely to become a new breed of elite selection. Mixed broadcast than unicast increase, because mixed survival of different species competition, resulting in plant type evacuation, ventilation and light