制种田喷施“九二○”是一项重要的增产措施,它能减轻包颈度,促进花期相遇,提高结实率。但过去一般沿用方法是兑水量大,每次每亩需要喷药液40～50公斤,劳动强度很大、花工多、工效低,因而影响其它管理工作的进行,成为制种工作中较繁重的一道工序。我们有见及此,在1986年开始使用低量喷雾获得成功后,1987年又进行了超低量喷雾试验,并在试验成功的基础上,推广示范50多亩,效果很好,今年计划在制种田全部推广这一方法。 Spraying “920” on the farmland is an important stimulant. It can reduce the neck size, promote flowering and increase the seed setting rate. However, in the past, the general method was to use a large amount of watered water, requiring 40-50 kilograms of liquid per mu per year. This led to a great labor intensity, heavy labor and low work efficiency, which in turn affected other management work and made the work of seed production heavier A process. We have seen this. After we started using low-volume sprays in 1986, we succeeded in carrying out ultra-low-volume spraying tests in 1987. Based on the successful tests, we promoted 50 mu of plots and achieved good results. This year we are planning Farming to promote this method all.