Planting time of sticky corn

The planting time of sticky corn is the same as that of common variety corn, which can be sowed before and after Grain Rain on April 20, when the ground temperature of 5-10cm is more than 10 ℃, or planted in greenhouse, this planting method is not limited by time.

1. Planting time of sticky corn

The planting time of sticky corn is the same as that of ordinary corn, and it is suitable to sow around April 20, when the ground temperature of 5-10cm in the open field is stable above 10 ℃. If you want to put sticky corn on the market early, you can also build a greenhouse for out-of-season planting.

2. Planting techniques of sticky corn

1. Choose the planting site

Sticky corn should be planted in land with flat terrain, fertile soil and irrigation conditions to avoid the effect of pollen self-induction, reduce the viscosity of varieties and affect the appearance. In order to maintain the species character of sticky corn, it is necessary to be isolated from other kinds of corn. Generally, the planting space isolation should not be less than 300 meters, and the barrier isolation should not be less than 150 meters, and the time isolation sowing time should be about 30 days different from ordinary corn.

2. Soil preparation and fertilization

Before planting sticky corn, 4000 jin of high-quality farm manure can be applied per mu, or during soil preparation, 3 jin of zinc sulfate, 20 jin of potassium sulfate and 60 jin of diammonium phosphate can be deeply applied to the soil as base fertilizer at a depth of 10-15cm. After the fertilizer is evenly mixed with the soil, sowing can be avoided and is beneficial to seed germination.

3. Sowing seeds at the right time

The main results are as follows: (1) when planting sticky corn, the amount of seeds used per mu is about 4 jin. Soaking and accelerating germination should be carried out before sowing. Generally, the suitable temperature for accelerating germination is about 25 ℃. After the seeds are almost completely exposed, direct seeding can be carried out. The suitable sowing time for sticky corn is about April 20, and the 5cm soil temperature is stable at about 10 ℃.

(2) sowing 3500-3600 holes per mu, 2-3 seeds per hole, because sticky corn grains are not full enough, and starch and other nutrients are low, resulting in poor germination rate, poor ability of top soil of young buds, and seedling emergence rate is lower than that of common varieties of corn, so sowing should not be too deep, shallow sowing should be carried out properly, and a small amount of soil should be covered, generally covering about 2-4cm.

4. Topdressing during the growing period

Because sticky corn is a fresh food, it is necessary to apply fertilizer and irrigation in advance, which is beneficial to promote the high quality and high yield of sticky corn. Topdressing at the first seedling stage can be carried out when the seedlings grow 7-9 leaves, and 30 jin of urea can be applied per mu. 60 jin of urea can be applied at jointing stage for the second time.