http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Yield Gap Analysis of Sweet Pepper in Protected Cultivations Between Korea and The Netherlands
Elize Kleijbeuker,Jeong Hyun Lee 한국원예학회 2019 원예과학기술지 Vol.37 No.2
The Korean production of highly valuable horticultural crops is less than 50% of the production inThe Netherlands. The production in Korea can be improved by yield gap analyses between a Dutchand a Korean grower. Fruit set, number of fruits, production of sweet pepper, and climate data of aDutch commercial grower were measured and compared with a Korean commercial grower. Greenhouse type and cultivar were same in both countries. The Korean grower produced faster andmore fruits after planting. However, with the increase in daily radiation later in the growing season,the Dutch grower harvested more sweet peppers per week, which results in a higher final production. Consequently, the difference in yield between growers was 10 kg·m-2. Low radiation along withlarge leaves and the relatively higher number of fruits for the young plants resulted in a lowsource-to-sink ratio (SSR), which causes abortion of reproductive organs. The fruit load variedbetween the two countries; however, it does not explain the factors limiting the yield. SSR canpredict the onset of fruiting, and an SSR above 0.5 suggested fruit onset. An SSR below thisthreshold value indicates light limitations. The SSR limits the fruit set, possibly due to high fruitloads and high vegetative sink strength. In the last part of the growing season, other factors couldhave played a role in the lower fruit set, since the SSR was mainly above 1. To improve yield, theKorean grower needs to know how to manipulate the vegetative and generative plant balance basedon weather conditions, irrigation management, and plant growth and developmental rate.