How many days is the growth period of sticky corn, and the planting management technology of sticky corn

The growth period of sticky corn generally depends on planting area and planting time. Ta

How many days is the growth period of sticky corn, and the planting management technology of sticky corn

The growth period of sticky corn generally depends on planting area and planting time. Take Northeast China as an example, its maturity is generally around 100 days. After sowing corn, be sure to water it with plastic film water, and water it properly, not too much, otherwise it will easily lead to water accumulation in the field and make the seedlings appear slowly yellow. When the corn seedling grows to 5 leaves, all the plants above 1 leaf should be cut off.

1. How many days is the growth period of sticky corn?

1. The growth period of sticky corn (from sowing to maturity) is mainly related to planting area and planting time. Take Northeast China as an example, its maturity is generally around 100 days. When planting sticky corn, we should pay attention to the fact that sticky corn is vulnerable to pests such as corn borer and armyworm, and we must pay attention to insect prevention when planting. If it is damaged by pests, it can be controlled by 2.5% cypermethrin EC or 20% mirex EC (1500-2000 times).

2. After corn is sown, it must be watered in time. If the amount of fertilization is too large and there is no watering, it will lead to burning seeds and serious shortage of seedlings. Be sure to water it in moderation, not too much. Flood irrigation is easy to cause water accumulation in the field, which leads to slow emergence and yellow seedlings, especially in deep-sown plots. It is necessary to control the amount of watering.

3. When the corn seedling grows to 5 leaves, all the plants above 1 leaf must be cut off with a blade, and then 1 leaf must be removed. Because the growing point of maize seedlings is still below the surface layer of soil at this time, new leaves can grow the next day after the leaves fall. Compared with non-defoliated corn, defoliated corn has thicker stalks, stable length and less bald tips, which can increase yield by about 30%.

Second, the planting and management technology of sticky corn

1, sticky corn planting

(1) Farming soil

① When planting sticky corn, we should pay attention to ploughing the soil, so that the roots of plants can be better rooted in the soil.

② Careful ploughing can make maize seedlings adapt to the new environment more quickly, but it must be ploughed in suitable weather, about 15cm.

(2) Selecting varieties

① Before planting sticky corn, carefully observe the soil and environment where the plants grow.

(2) Be sure to choose varieties suitable for sowing. You can choose varieties that are resistant to floods and droughts and have certain immunity to pests and diseases, or choose varieties with high yield and stability.

(3) Planting density

① The planting density of waxy corn will directly affect the yield. After strict calculation, about 5000 plants can be planted in 1 mu.

② Between this density, plants can get good illumination and breathe naturally. The density of 5000 plants 1 mu can increase the yield.

(4) Pest control and disease prevention

① When planting sticky corn, be sure to prevent insects and diseases. In general, the high incidence of pests and diseases is in autumn, because the air humidity is high in this season, which is very suitable for bacterial breeding and pests.

(2) To discharge the surplus water in the field in time, chemical pesticides or biological control can be used to prevent and control pests and diseases, so as to reduce the harm to soil and plants.

2. Waxy corn management technology.

(1) Fertilization

① The period from jointing to booting of sticky corn is the most fertilizer-demanding period, especially the big bell mouth period (leaf age index is about 60%), which is the key period to determine the ear diameter and grain number.

② During this period, nitrogen fertilizer must be applied again, and 20-25 kilograms of urea can be applied per115 hectares.

(3) The fertilizer must be furrowed and applied deeply, with the fertilization depth of 10cm, and the fertilizer must be kept about 12- 15cm with the plant.

④ Granular fertilizer must be supplemented from tasseling to flowering stage, and generally 7.5-115 kg urea is applied per hectare.

(2) Sprinkle water

① Waxy corn will enter a vigorous growth stage from jointing stage to tasseling stage, especially about 10 days before tasseling, when the demand for water will be higher. For the critical period of water demand, the relative water content of soil should be 70%-80%.

(2) Corn is very sensitive to water, and the peak of water demand is from tasseling stage to flowering stage, and the relative water content of soil should reach about 80%.

③ The period from seed composition to wax maturity is an important stage to determine the output value of corn, at this time, enough water is also needed, and the relative water content of soil in this period is appropriate to be 70%-75%.

(4) In the above period, if the soil water content is lower than the lower limit of suitable water content, it must be sprayed with water, and it should be drained in time in case of waterlogging.

(3) Prevention and control of pests and diseases

① When the average number of aphids per 10 corn plant reaches more than 500 in the middle and late growth period of sticky corn, 40% omethoate EC 1000- 1500 times can be sprayed.

② Corn borer is the main pest at heading stage. Every115 hectare, 250 grams of 3% phoxim granules can be mixed with 5-6 kilograms of fine sand and sprinkled on the heart leaves or leaf axils, tassels and ears of corn.

③ When controlling corn leaf spot, 50% carbendazim or 50% bactericide can be sprayed with 500 times solution, and used every 5 days 1 time.