A, the commune content: a month before planting cassava, first turn to plow sun white, make soil weathering in full.Kind of per mu shi into and livestock manure heap retting rotten 250 kg to 300 kg phosphate fertilizer as basal.
Second, choose good: must choose potato, less toxicity, high yield varieties.Section and thick stems, diseases and pests, no damage, the lower part of stem for stem.
Three, seedlings processing: interception of 33 cm long before planting seedlings, cutting bevel bottom 3 -- 6 cm, the duck mouth shape.
Above the bevel on both sides of the kinds of stem, every section 2 each line segment cut stem bark, 2, 3, break away from the procambium incision stem circumference of 1/4 width and 2 cm long, it can make the bevel and break away from the cambium of root knot more potatoes.
Planting, take the control of axillary bud on quarter growth method, in addition to leave three kinds of the top of the stem section of a lateral bud, the remaining sections of axillary bud get rid of, and changes inclined plug for horizontal plug, this can be controlled to grow a good strong main stem of the plant.
Four, hire orientation fertilization: after a when seedlings to 12-15 cm long, for the first time fertilization, 30 acres with loose stool water spray applied.
Except in seedling root under appropriate focus around 40 cm from seedlings, prompting to take root, spread quickly.Potato seedlings to 50 cm long, the second fertilizer, with high grade muck water 40-50 mu Dan against the 8-10 kilograms leaching applied urea, from the fat in plants around 50-60 centimeters, make potato root along a surface soil magnetism.Potato seedlings to 70-100 cm long, choose in multi-topping sunny noon, the growing point to 3-5 cm.Then 60 acres with manure bear plus 10-12 kg urea spray, its long out of the branch.
Five, digging heavy fall fertilization: after autumn, choose a sunny day, with the hoe pull open base on one side of the earth (be careful not to damage the root) with root, make soil exposure, 4, 5 hours, then mu in the 100 kg plus phosphate mixed retting producyion 30 kg into the base of cassava, after 12 hours then earth up.
This Can make cassava do not lose their leaves in late autumn, extend the growing season, let cassava grow fast but long, smooth skin, good quality, high yield.