经田间试验表明,今年所试的3个品种,亩保苗5千至7千的5个密度中,38P05与德美亚3号的产量变化规律相同,都是亩保苗5千株的产量最高,然后随密度增加产量下降,到7千株时亩产最低。德美亚1号的产量变化规律与前2个品种正好相反,亩产是随着密度的增加而产量逐渐增高,到7千株时亩产达最高。 Field experiments showed that among the three varieties tested this year, among the five densities of 5,000 to 7,000 mu, the yield of 38P05 and Demeiya 3 were all the same, with the highest yield of 5,000 seedlings per mu With the increase of density, the yield decreased to the minimum of 7 plants per mu. The change of output of Demeiya 1 was the opposite of that of the first two cultivars. The yield per mu was gradually increased with the increase of density, reaching the highest at 7 plants per mu.