http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
화학성이 다른 토양에 양수분 및 광질 처리를 통한 토마토 기능성물질 변동
김양민 ( Yangmin X. Kim ),손수영 ( Su Young Son ),성좌경 ( Jwakyung Sung ),이예진 ( Yejin Lee ),이찬욱 ( Chanwook Lee ),이슬비 ( Seulbi Lee ),현병근 ( Byunggeun Hyun ),송요성 ( Yosung Song ),류철현 ( Chul Hyun Yoo ),정은성 ( Eun S 한국환경농학회 2021 한국환경농학회 학술대회집 Vol.2021 No.-
We investigated the combined effects of nutrients, water and supplemental light on metabolite composition in tomato fruits. To achieve our goal, we used soils with different chemical properties, and the treatments were as follows; 1) Nitrogen (N; low, standard and high), 2) Water (-30 kPa and -80 kPa) and 3) Light (on or off of red light). The metabolites from tomato fruits were investigated using non-targeted metabolomic approach. The content of lycopene was highest under high N and limited water without supplemental red light. Low N greatly reduced amino acids whereas the water supply showed minor effects. The combination of red light to standard N affected little, however, the combination of red light to low N increased some sugars and phenylpropanoids. In high N, red light greatly affected the metabolites and water supply resulted in minor effects; red light increased a majority of amino acids and sugars, however led to a dramatic decrease in most of secondary metabolites. Therefore, application of supplemental red light greatly shifted the tomato metabolites, especially under the soil nutrient status out of the standard condition.
Adjustment of the Nitrogen Fertigation Considering Soil NO₃-N Status for Greenhouse Watermelon
Yangmin X. Kim(김양민),Yejin Lee(이예진),Chanwook Lee(이찬욱),Seulbi Lee(이슬비),Byung Keun Hyun(현병근),Yo Sung Song(송요성),Chul Hyun Yoo(류철현),Song Rae Cho(조송래) 한국토양비료학회 2021 한국토양비료학회 학술발표회 초록집 Vol.2021 No.11
Growth-stage-based fertigation has provided a weekly nutrient supply schedule in accordance with the crop growth and nutrient uptake for greenhouse crops including watermelon. However, it did not consider the soil nutrient status, and fixed the total amount of NPK fertilizer supply for each crop, although it considered the aimed yield and growth season. The objective of this study is to compare the growth, nitrogen uptake, and yield of watermelon and soil NO₃-N concentration by varying the amount of nitrogen (N) fertigation under either low NO₃-N soil or optimal NO₃-N soil. We cultivated watermelon in the spring of 2021 at two farmer’s greenhouses, in which one had 11 mg kg<SUP>-1</SUP> of soil NO₃-N and the other had 94 mg kg<SUP>-1</SUP> of NO₃-N soil (recommended soil NO₃-N for greenhouse cucumber: 50 to 150 mg kg<SUP>-1</SUP>). Different nitrogen levels (N0, N0.5, N1, N2) were supplied and N1 equals the standard N supply recommendation of the growth stage-based fertigation for watermelon cultivation (9.6 kg 10a<SUP>-1</SUP>). The concentrations of soil NO₃-N during the cultivation were higher than 150 mg kg<SUP>-1</SUP> in any N supply level under low and optimal NO₃-N soils. The fruit yield was highest in N1 under low and optimal NO₃-N soils. Considering the fruit yield and soil NO₃-N, N1 is suitable for soils with low and optimal NO₃-N.