The invention provides a method for improving a
saccharum officinarum seed stem breeding yield and harvesting the
saccharum officinarum in advance. The method comprises the following steps: step A, selecting one-level seed stems of healthy seed seedlings, and
cutting the stems into segments for usage; step B, preparing land, controlling the
tilling depth to be 40cm or more, digging planting furrows with a row spacing of 120cm, a furrow depth of 25-30cm, and a furrow bottom width of 20-25cm, wherein the furrow bottom is smooth, and soil is loosened, smashed and fine; step C,
sowing the seed stems, allowing buds to face to two sides, and covering the seed stems with smashed soil; step D, performing thick planting reasonably; step E, after seed stem planting and earthing are finished, preparing a
weed killer mixed liquid by adopting 600mL of 80%
acetochlor emulsifiable concentrate and 750-1125kg of water, and spraying the
weed killer mixed liquid to the planting furrows uniformly; step F, before intertillage and
hilling, uncovering a membrane, and in an intertillage stage, applying
urea topdressing, and performing
hilling; and step G, in a tillering last stage, mixing 3g of
gibberellin , 300g of
calcium nitrate, 200g of
potassium nitrate, 60g of
boric acid, 35g of a sugarcane borer removing agent, and 200mg of
prochloraz, and dissolving the above
mixed materials in 600-800mL of water. The method provided by the invention can promote
saccharum officinarum growth and development, the
saccharum officinarum can be harvested 6-10 days in advance, and the seed breeding efficiency is improved.