地处塞北的平泉县,自1990年开始,根据本地气候特点,在玉米杂交制种中,采取了一套相应的模式化栽培技术,使徘徊了多年的制种产量有了新突破。1990—1993年四年累计推广19.3万亩,平均亩产309.8公斤,比模式化前的1989年亩增78.8公斤。省、地专家对这套技术给予了肯定。其技术要点可概括为八句歌:播种播在最佳期,地温10度最适宜;苗全苗齐是基础,不全不齐定要补;留苗密度很关键,四至五千要实现;科学施肥最恰当,根据需求来配方;不管东西南北中,哪盖地膜哪成功;沉睡耕作要唤醒,大力推广对子垄;严防跑粉最重要,扒苞抽雄才牢靠;欲想种子质量高,站秧扒皮方法好。 现将其具体措施分述如下: Located in Pingquan County, Saibei, since 1990, according to the local climate characteristics, a set of corresponding modeled cultivation techniques have been adopted in the hybridization of maize to make a breakthrough in seed production that has been hovering for many years. During the three years from 1990 to 1993, a total of 193,000 mu of land was popularized, with an average of 309.8 kilograms per mu, 78.8 kilograms more than the 1989 pre-model mu. Provincial and local experts affirmed this technology. The technical points can be summarized as eight songs: sowing broadcast in the best period, the most suitable temperature to 10 degrees; Miao all seedlings Qi is the foundation, not all set to fill; Liao Miao density is the key to four to five thousand to achieve; Science Fertilization is the most appropriate, according to the demand to formula; no matter what the north-south, which cover the film which success; sleeping farming to wake up, vigorously promote pairs of ridge; prevent the most important powder, Seedling skinning method is good. Now the specific measures are as follows: