关键词: 磷胁迫, 磷胁迫, 植株生长, 干物质积累, 三七

Abstract: To study the effects of ridge planting and flat planting on yield and quality of sugar beet in the northeast region under the rotary tillage, using beet‘H004’as the experimental material and partitioning methods in 2017, sugar beet root yield, green stem and leaf production, sugar content, ratio of dry matter quality between ground and underground parts of beet, soil water content and soil bulk density were measured in rotary tillage soil of Hulan district of Harbin under the condition of ridge planting and flat planting. It was found that there was no significant difference in sugar content between flat planting and ridge planting beet under rotary tillage conditions, but the yield of ridge planting beet root was higher than that of flat planting beet. The yield of sugar beet root in ridges reached 87.8 t/hm2, while the yield of sugar beet root in flat planting beet root was only 72.9 t/hm2. In addition, the study found that some dry matter of flat beet accumulated more on the ground. For example, ratio of dry matter quality between underground and ground parts of flat planting sugar beet should be significantly lower than that of ridge planting sugar beet. At the same time, it was found that the soil water content and soil loose degree of ridge cultivation were better than those of flat cultivation. For example, in the 20-26 cm soil layer, the soil weight and water content of the ridge soil are 1.38 g/cm3 and 21.96 %, respectively, while the soil weight and water content of the 20-26 cm flat planting soil are only 1.56 g/cm3 and 19.35 %. Our study shows that the cultivation of ridge is more suitable for sugar beet production under the conditions of rotary tillage in northeast China, and it is also playing an important role for the construction of high-yield sugar beet cultivation patterns in northeast China.