http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
엽과비 조절이 무가온 하우스 하례조생 감귤의 비대 및 과실품질에 미치는 영향
강석범 ( Seok-beom Kang ),좌재호 ( Jae-ho Joha ),문영일 ( Young-eel Moon ),이혜진 ( Hae-jin Lee ),한승갑 ( Seung-gap Han ),박경진 ( Kyung-jin Park ),김상숙 ( Sang-suk Kim ),최영훈 ( Young-hun Choi ) 한국환경농학회 2018 한국환경농학회지 Vol.37 No.3
BACKGROUND: Recently, the need for a method to cultivate ‘Haryejosaeng’ Satsuma mandarin has been increasing. However, there is limited information available as this is a new Satsuma mandarin cultivar, which was bred by the RDA in 2004. Many farmers who cultivate this cultivar follow the cultivation method similar to that used for ‘Miyagawa’ Satsuma mandarin, and suffer low production of optimum-sized fruits. METHODS AND RESULTS: This study was conducted to find out the optimum ratio of leaf-to-fruit for the stable production of high quality ‘Haryejosaeng’ Satsuma mandarin fruits in a non-heated plastic film house. Seven-year-old ‘Haryejosaeng’ Satsuma mandarin trees were used in the study. Before the treatment, the leaf- to-fruit ratio ranged from 5.7 to 17.9. The treatments included 10, 20, 30, and 40 leaves per fruit. The fruits were removed if over fruiting was observed at day 60 after full bloom. We investigated the fruit size and quality on the day of harvest. Flowering and fruiting patterns in each treatment were recorded for the following year. In the experiments, the flower-to-leaf ratio was 1.12 to 1.74. As the leaf-to-fruit ratio decreased, the fruit size and weight also decreased. Contrarily, the higher the ratio of leaf-to-fruit, the higher fruit size and weight were. It was noted that the ratio of 20:1 was ideal to produce the M grade optimum-sized Satsuma mandarin fruits on the day of harvest. However, higher ratio might result in fruits weighting above 100 g. There was no difference among the treatments in terms of fruit quality, such as total soluble solid contents, titratable acid, and color. In the subsequent years, flowering and fruiting in the treatments were lowered when the leaf number per fruit was 10, but they were improved when the leaf number per fruit was above 20. CONCLUSION: Based on the above results, the optimum ratio of leaf-to-fruit was found to be 20:1 for flowering and fruiting of ‘Haryejosaeng’ Satsuma mandarin. It is important that optimum ratio of leaf-to-fruit is set as a standard to produce good grade and quality of ‘Haryejosaeng’ Satsuma mandarin fruits.
연구보문 : 환경생물 ; 사과원에서 피복식물이 토양생물상에 미치는 영향
어진우 ( Jin U Eo ),강석범 ( Seok Beom Kang ),박기춘 ( Kee Choon Park ),한경숙 ( Kyoung Suk Han ),이영근 ( Young Keun Yi ) 한국환경농학회 2010 한국환경농학회지 Vol.29 No.3
사과원 토양의 지속적인 생산성을 위해 토양생물의 변화를 파악하는 것이 중요하므로, 피복식물 재배에 따른 미생물 PLFA 및 미소동물의 개체밀도 변화를 조사하였다. 피복식물은 두과식물인 호밀, 귀리, 들묵새와 두과식물인 자운영, 레드클로버, 크림슨클로버, 헤어리배치를 대상으로 하였다. 청경구에 비하여 피복식물을 재배하였을 때 미생물 PLFA 수치 및 미소동물이 증가하였기 때문에 청경구보다는 피복식물로 토양을 관리하는 것이 토양생물을 증가시키는데 유리할 것으로 사료된다. 미생물 PLFA 수치에서는 피복식물간 차이가 적었지만, 화본과식물 중에서는 들묵새와 두과식물 중에서는 자운영이 토양의 미소절족동물의 개체밀도를 증가시키는 효과가 비교적 큰 것으로 나타났다. 본 결과는 적절한 피복식물 선정을 통한 효과적인 유기물분해와 안정적인 양분공급을 위한 기초자료로 활용될 수 있을 것이다. We aimed to investigate the responses of soil organisms to cover plants and to provide information for the selection of proper plant species. We studied the effects of 7 cover plants, including rye, oat, rattail fescue, Chinese milk vetch, red clover, crimson clover, and hairy vetch, on soil organisms in an apple orchard. An increase in the microbial phospholipid fatty acids (PLFA) and in the number of nematodes and microarthropods in the soil under the cover plants reflects elevated activities of soil organisms. A decrease in the level of some marker PLFA, which is an indicator of environmental stress, suggests that cover plants provide favorable environments for soil organisms. The population of fungi and animals that feed on fungi increased in the soil surface under red clover. The population density of nematodes and mites increased in the soil surface under rattail fescue, and that of mites and omnivorous nematodes increased in the soil surface under Chinese milk vetch. The level of microbial PLFA in the soil surfaces under the tested cover plants was higher than that under clean culture system. These results suggest that proper selection of the cover plants can facilitate the creation of favorable environments for soil organisms.