What is the rejuvenation stage, jointing stage, heading stage, and grain filling stage

Regreening stage: refers to the period of time when the seedlings of plants change from yellow to green and resume growth after transplanting or overwintering.

Jointing stage: the period when the internodes of the stem are rapidly elongated upwards during the growth of cereal crops. Generally, more than 50% of the plants in the field are marked by centimeters of the first stem node exposed to the ground. At this time, the plant grows quickly and needs a lot of water and nutrients.

Heading stage: It is the phenomenon that the fully developed ears of cereal crops (rice, wheat, corn, etc.) extend out of the top leaves with the elongation of the stem. The general heading period refers to the beginning of heading of 50% of the plants in the field.

The heading period is a critical period that determines the number of grains set in a crop and requires special management.

Grain filling period: is a period of growth for crops, that is, through photosynthesis.

The starch, protein and accumulated organic matter produced are a stage in which they are stored in the grain through assimilation.

These are the 9 stages of rice's life, let's see for yourself.

Clause. First, the germination period. The first stage of rice growth. The hallmark is the formation of germ and bacon.

Clause. Second, the seedling stage. This period lasts from the first page to the appearance of the first tillers. The hallmark is the formation of seed roots and 5 leaves.

Clause. 3. Tillering period. The change phase lasts from the first tiller to the maximum number of tillers. Generally, it is divided into primary tillering, secondary tillering and tertiary tillering.

Clause. Fourth, the jointing period. The exact time of the jointing stage is difficult to determine, and it may begin before the differentiation of young panicles or at the end of tillering. That is to say, there is an overlap between the tillering stage and the jointing stage.

Characteristics: The number of tillers is increasing, the height is increasing, the leaves are not obviously senescent, and the sealing and canopy formation are increasing.

Clause. Fifth, booting period. The differentiation of young panicles marks the beginning of the parallel stage of vegetative growth and reproductive growth of rice. The young spikes are differentiated for about 10 days, and the inflorescences of the young spikes can be seen with the naked eye.

The spikelet length increases, elongating upwards within the flag leaf sheath, resulting in the expansion of the flag leaf sheath. The expansion of the flag leaf sheath is called booting. The yellowing and senescence of leaves are obvious.

Sixth, heading period. The moment the tip of the panicle (i.e., the later panicle) is drawn from the flag leaf sheath marks the beginning of the booting period. The panicles continue to elongate until they are mostly or completely withdrawn from the leaf sheath.

Clause. 7. Flowering period. The poplar flowering stage begins with the anthers emerging from the spikelets and fertilization immediately after. When poplar flowers, the florets open and the anthers protrude from the palet due to the elongation of the stamens, so that the pollen is scattered and the palet shell is then closed.

The process is as follows: the glume shell opens--- stamens elongate--- pollen is released--- the glume shell closes.

Clause. 8. Milk maturity period. At the milky maturity stage, the rice has already begun to observe the milky substance. From the appearance of the paddy, the green panicles begin to curve downward. The base of the tillers begins to senescent, but the flag leaf and the two lower leaves are still green.

Clause. 9. Wax ripening period. The milky ingredients of the grains begin to transform into a soft, raw dough and other substances. In appearance, the grains on the ears of rice begin to turn from green to yellow. The tillers and leaves have been visibly senescent.

After planting, the rice was planted in the following order: regreening, tillering, jointing, booting, and grain filling.

Wheat: tillering, regreening, jointing, booting, grain filling.

Winter wheat - tillering (before winter), regreening, tillering (after winter), jointing, booting, grain filling.

Rice - regreening (also called slow seedlings, regreening), tillering, jointing, booting, and grain filling.

Regreening, tillering, jointing, booting, grouting.