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KCI 등재
벼주요품종의 질소시비순준에 따른 도복저항성 정도
Field Lodging Degree of Rice Varieties according to Nitrogen Application Rate
박중수 ( Jung Soo Park ) , 이원우 ( Won Woo Lee ) , 주영철 ( Young Hoo Kim ) , 김영호 ( Young Cheoul Ju )
UCI I410-151-25-02-091960725

This experiment was to evaluate lodging characteristics of 35 recommended rice varieties of Kyonggi-do at normal (110 ㎏ N/ha) and heavy (220 ㎏ N/ha) nitrogen application rates during 1999 to 2000. At heavy N fertilization rate, varieties that were highly resistant to lodging were Obongbyeo, Daejinbyeo, Naepoongbyeo, Nonganbyeo and Ilpumbyeo. Fourteen varieties including Daeanbyeo were moderately resistant and 11 varieties including Jinbubyeo were susceptible to lodging. The lodging-related characters which showed the highest effect on lodging at lodging degree of 9 were culm length and height of center gravity, culm length at lodging degree of 5, and culm length and the third internode length at lodging degree of 3 or below. The difference in rice yield between normal and heavy nitrogen fertilization rate was within 5% in early-maturing varieties but there was great yield difference in mid- and late-maturing varieties depending on the degree of lodging. Consequently, stable rice yield could be obtained by selecting lodging-resistant varieties and lowering fertilization rate, specially in the paddy field where lodging occurrence is common.

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[자료제공 : 네이버학술정보]
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