What role does water play in each growth stage of sorghum?
What roles does water play in each growth stage of sorghum? Please provide an introduction. The water requirements of sorghum during its growth period are as follows: sowing can be done when the soil moisture content is 15%-20%. The water requirement at the seedling stage accounts for 8%-15% of the total water requirement of the whole growth period. The most suitable soil moisture content is 50%-65% of the field maximum water holding capacity...
What roles does water play in each growth stage of sorghum? Please provide an introductionThe water requirements of sorghum during its growth period are as follows:
Sowing can be done when the soil moisture content is 15%-20%.
The water requirement at the seedling stage accounts for 8%-15% of the total water requirement of the whole growth period. The most suitable soil moisture content is 50%-65% of the field maximum water holding capacity.
Properly controlling soil moisture during the seedling stage is beneficial to the sound development of vegetative organs. The water requirement during the jointing and booting stage accounts for 33%-35% of the total water requirement of the whole growth period.
The water requirement during the heading and flowering stage accounts for 22%-32% of the total water requirement of the whole growth period. Water shortage at this time increases the number of sterile flowers, reduces the vitality of pollen and stigmas, and leads to poor fertilization. Excessive water during the heading stage often causes degeneration of the branches and spikelets in the lower part of the panicle.
Sorghum's sensitivity to water is, in order: jointing and booting stage, heading and flowering stage, grain filling and maturity stage. Once drought occurs during the grain filling stage, grain yield will decline. In the late grain filling stage, excessive soil moisture will cause delayed maturity with excessive vegetative growth, and may even lead to frost damage.
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