| Effects of nitrogen fertilization amount on growth rate and nitrogen use efficiency of sugar beet by drip irrigation with mulch |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2016.03.06 |
| Key Words: nitrogen fertilization amount drip irrigation with mulch sugar beet nitrogen use efficiency sugar content yield |
| Author Name | Affiliation | | GUO Xiao-xia | Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences Special Crops Institute, Hohhot, Inner Mongolia 010031, China | | SU Wen-bin | Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences Special Crops Institute, Hohhot, Inner Mongolia 010031, China | | FAN Fu-yi | Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences Special Crops Institute, Hohhot, Inner Mongolia 010031, China | | HUANG Chun-yan | Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences Special Crops Institute, Hohhot, Inner Mongolia 010031, China | | REN Xiao-yun | Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences Special Crops Institute, Hohhot, Inner Mongolia 010031, China | | WANG Yu-fen | College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia 010021, China | | YAN Wen-zhi | Bayannaoer Academy of Agricultural and Animal Sciences, Bayannaoer, Inner Mongolia , 015000, China |
|
| Hits: 1301 |
| Download times: 753 |
| Abstract: |
| In order to investigate the effects of nitrogen fertilization amount on the growth rate and the accumulation, transfer and use efficiency of nitrogen in sugar beet under drip irrigation in the cool and dry region of Inner Mongolia and in order to select the best nitrogen fertilization amount for sugar beet by drip irrigation with mulch in this area, a two years field test was carried out to perform a dynamic analysis on sugar beet dry matter accumulation, nitrogen accumulation amount in different organs, nitrogen increasing rate and yield components. The differences in nitrogen use efficiency, yield and sugar content among different nitrogen levels were elucidated. The field locating trials with single factor randomized block design were repeated for 4 times. The results showed that the agronomic characteristics of sugar beet all showed an increasing firstly and then decreasing trend with the increase of nitrogen fertilization amounts. 50, 100 kg·hm-2 and 150 kg·hm-2 showed better result than others. The sugar content became decreased with the increase of nitrogen fertilization. Furthermore, sugar contents by non-basal fertilizer treatment were 3.20%, 3.63%, 8.30%, 3.07% and 12.24% respectively higher than those by 0, 50, 100, 150 kg·hm-2 and 200 kg·hm-2. The nitrogen accumulation amount of sugar beet both showed an increasing trend with the increase of nitrogen rate and the progression of growth period. The nitrogen recovery efficiency showed a firstly increasing and then decreasing trend with the increase of nitrogen fertilization amount, but the nitrogen agronomic efficiency, nitrogen physiological efficiency and nitrogen partial factor productivity all showed a decreasing trend. Based on the results from agronomic characteristics, yield, sugar content and nitrogen use efficiency, the treatment of 100 kg·hm-2 was the best for this area. Through the analysis of the law for sugar beet yield formation and the variation law of nitrogen accumulation, transfer and use efficiency under different nitrogen fertilization amount can be employed to provide a theoretical and technological basis for high yield, good quality and high benefit of sugar beet. |
|
|
|