How to Grow Corn for Higher Yields? Detailed Guide to High-Yield Planting Techniques
How can you grow corn for higher yields? Here are some suggestions. The following methods for growing corn can increase yields for your reference: 1. Planting patterns. 1. Side-film cultivation: level the field according to conventional planting specifications, lay the film, then manually open holes and dibble seeds on both sides of the film, 3-5 cm from the film edge. 2. Wide-narrow row cultivation: plant with film mulch using a specification of 80 cm wide rows...
How can you grow corn for higher yields? Please give suggestions.
The following methods for growing corn can increase yields for your reference:
I. Planting patterns
1. Side-film cultivation: level the field according to conventional planting specifications; after laying the film, manually open holes and dibble seeds on both sides of the film, 3-5 cm from the film edge.
2. Wide-narrow row cultivation: plant with film mulch using a specification of 80 cm wide rows and 40 cm narrow rows.
3. Intercropping and relay intercropping: generally, intercropping and relay intercropping in time and space can be used. Common forms include: corn intercropped with ground beans, corn intercropped with garlic, corn intercropped with vegetables, and corn intercropped with wheat followed by Chinese cabbage, etc.
4. Plant spacing with retained seedlings: to increase corn sowing density, on the basis of appropriately increasing plant spacing, leave single or double plants in alternate holes. Generally, 500 plants/667 sq m can be added.
II. Chemical control techniques
1. At the big trumpet stage, spray chemical hormones such as jianzhuangsu, aifengsu, and mepiquat chloride to control excessive vegetative growth of corn, reduce nutrient loss and water loss, and increase yield.
2. Promote early maturity of corn through manual detasseling, fertilizer regulation, and hormone use.
(1) Manual detasseling. In the early flowering stage of corn, use a 3:1 ratio: remove tassels from 3 rows and keep 1 row to ensure pollination; later remove the remaining 1 row. This can advance maturity by 3-5 days.
(2) Apply fertilizer to regulate the growth period. Methods such as seed dressing with zinc fertilizer, spraying leaves with micro-fertilizer, and controlling nitrogen in the later stage can all advance maturity by 5-7 days on the basis of earlier emergence.
(3) Hormone use. In the later stage of crop growth, foliar spraying of ethephon, gibberellin, etc. can advance maturity by 3-5 days.
III. Pest and disease control techniques. Mainly introduce control methods for red spider mites: apply chemical pesticides nissol (1500 times, strongly lethal to eggs and larvae, ineffective against adults), propargite (2000-3000 times, dissolve in warm water when applying), abamectin (5000-6000 times), and 3% 3991 granules by fumigation.
IV. Weed control techniques
1. Soil treatment: use atrazine (atrazine, lvyou, yi'a), alachlor (lasso), acetochlor, etc., and spray on the soil surface after sowing and before mulching.
2. Seedling-stage treatment: when weeds have 2-3 leaves, spray atrazine, 2,4-D butyl ester, and yunongsi on the weed leaves, avoiding contact with corn leaves as much as possible.
3. Some perennial weeds: non-selective herbicides such as Roundup, Gramoxone, and glyphosate can be selected. When applying, directed spraying must be used (add a protective shield and spray at a low position).
V. Use of micro-fertilizers and biological fertilizers. Although trace elements are needed only in very small amounts during crop growth, they play an important role. As long as a little micro-fertilizer is added, crops can simultaneously obtain more other nutrients. For corn, it is generally recommended to spray calcium, zinc, magnesium fertilizers, etc. on the leaves at the seedling stage.
VI. Other techniques
1. Different harvest periods: choose different harvest periods according to different planting purposes. For grain corn, the full-ripening stage is best; for green fodder and silage corn, the late milk stage to early dough stage is best; for sweet and waxy corn, harvesting when the kernels are fully filled to the top is best.
2. Harvesting methods: grain corn can be harvested with stalks attached, allowing sugars to continue transferring to the kernels.
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