유해영

3.7.1. Panicle initiation Panicle initiation occurs 35 days before flowering. A panicle forms at the tip of the growing point of the shoot. The panicle is visible to the naked eye when it is 1 mm long. At 1 mm, the young panicle has many fine, white, hairy structures at the tip. The plant will produce three more leaves before the panicle comes out of the leaf sheath. 어린 이삭이 작게, ..

3.6.8. Nitrogen level affects tillering A function of nitrogen in rice plants promotes rapid growth or increased height and tiller number. Rice plants require a large amount of nitrogen at the early and mid- tillering stages to increase tiller number. But too much nitrogen can increase the incidence of diseases and lodging. 뿌리, 물결 그림, 뿌리 주변 양분표시

3.6.7. Season of planting affects tillering Rice plants produce more tillers during wet season than during dry season. Rice plants need more nitrogen fertilizer during dry season to increase tiller number. Closer spacing in dry season helps to produce the same number of tillers per square meter as in wet season. 뿌리 그림, 물결 다시, 하늘에 구를, 해 표시

3.6.6. Spacing affects tillering The tiller number per plant increases as the distance between plants increases. 132 tillers can be produced per square meter in case of 50×50 cm spacing. In case of 10×10 cm spacing, 300 tillers can be produced per square meter. If plants are spaced far apart, the number of tillers per square meter may be reduced.

3.6.5. Variety affects tillering Varieties differ in tillering capacity. Tillering capacity can be obtained by growing the rice plants far apart in rich soil. Most rice plants do not reach full tillering capacity, particulary if soils are poor or if rice plants are closely spaced. Rices of high tillering capacity can be planted at a wide range of spacings. 땅 표시, 뿌리 그림, 물결 수..

3.6.4. Productive and nonproductive tillers A tiller which produces a panicle at the tip is called a " productive tiller ". A tiller which dies without producing a panicle is called a " nonproductive tiller ". Tillers formed during late growth stages are usually nonproductive. Either the tillers die or the panicles produced are too small and ripen late. Modern varieties have more tillers at flo..

3.6.3. Production of tillers Tillering starts 10 days after transplanting and reaches maximum 50-60 days after transplanting. The number of tillers produced and duration of the tillering period depend upon many factors, such as variety, spacing, nutrient availability, and temperature. After reaching the maximum, the weak tillers generally die and the number of tillers decreases and levels off. ..

3.6.2. Tillering pattern When the fifth leaf on the main culm emerges, the first leaf of the first tiller comes from the axil of the second leaf on that clum. Primary(P) tillers come from the main stem. Secondary(S) tillers develop from primary tillers. Tertiary(T) tillers develop from secondary tillers. The lower the point of origin on the main stem, the older is the tiller. 선의 굵기로 P..

3.6.1. Primary tiller Tillers are branches that develop from the leaf axils at each unelongated node of the main shoot or from other tillers.The first leaf normally do not produce tillers. The first primary tiller usually develops between the main stem and the second leaf from the base of the rice plant. The tiller remains attached to the mother plant at the later growth stages but is independe..

3.5.5. Root distribution and fertilizing Root distribution depends on placement of fertilizer. Mixing the fertilizer thoroughly into the plowed soil results in deeper roots and better root distribution. Deep placement of fertilizer near the plant is more efficient than broadcasting it. 둘째그림을 그려요 Shallow placement of fertilizers Deep placement of fertilizers 이삭 그림, 검은..