High-yield cultivation techniques of sticky corn
Sticky corn is a special type of corn, which has the characteristics of high technical content and high economic value compared with common corn. Its main cultivation techniques are:
First, choose land preparation.
1. Choose plots with flat terrain and above-average fertility conditions.
2. Isolation planting: In order to maintain the sticky corn species, prevent the pollen self-inductance effect, reduce the viscosity and affect the appearance, it must be isolated from other types of corn. Generally, the space isolation should not be less than 300 meters, and the barrier isolation should not be less than 150 meters; the time isolation is 30 days difference from other corn in the sowing period.
Second, rational fertilization and irrigation
1. Acre of high quality farmyard manure 2000 kg.
2. Combined with the ground preparation, a deep application of 30 kg of diammonium, 10 kg of potassium sulfate, 1.5 kg of zinc sulfate, and a depth of 10 to 15 cm. The soil is mixed and then sown to prevent the emergence of seedlings.
3. Topdressing: Because sticky corn is a fresh food, it is extremely important to catch high-quality and high-yield water. The first top dressing was carried out at 7 to 9 leaves, and 15 kg of urea was applied per mu. For the second time, 30 kg of urea was recovered during the jointing stage of the plant.
4. Fill the water in time during the filling period.
Third, fine sowing, to ensure the whole seedling
1. The amount of seed used is 2 kg, soaked with germination and germination with "jack" activator. The optimum temperature for germination is 25 °C.
2. The optimum sowing date is from April 25th to May 5th. 5cm ground temperature can be sown at 8°C, and 3500~3600 points, 2~3 capsules/point. Because the sticky corn kernels are not full, the nutrient content of starch and other nutrients is small, the germination potential is weak, the seedling ability of the young shoots is poor, and the emergence rate is far lower than that of ordinary corn. Sowing should not be too deep, suitable for shallow sowing, shallow covering soil, generally covering 2 ~ 4 cm or so.
3. Seeding in stages, listed in batches. In order to adapt to the market demand, in case of overdue harvest, quality decline, and the price drop affects economic income, it is staged and planted in batches. The live broadcast can be staged from April 25 to June 10, and broadcast every 5-7 days. Generally, the first two periods are lower due to lower temperatures, and the wrong time can be extended. The temperature of the grouting matured in June was lower, and the corn grouting rate was slow, and the two periods could be shorter. For the morning market, plastic film covering, paper tube seedling, plastic tray seedling transplanting method can be used. It can be sown 7 to 10 days in advance, and the transplanting of 3 leaves and one heart period should be based on the principle of emergence or after the seedlings are staggered. If the greenhouse is used for seedling cultivation and then transplanted into a plastic greenhouse, it can be sown in early April. Early-maturing sticky corn varieties can be replanted with wheat and Chinese cabbage, and seedlings are planted 10 to 15 days before wheat harvest.
Fourth, the management of cultivating
1. Use 50% acetochlor EC 75-100 ml/mu for grass control, and spray 30 kg for acre. Spray before spraying. If the sorghum is also planted with corn, it can also be added to the simmering grass when pouring water, and the amount of the acre is 1 kg.
2. Seedling period to ensure seedlings, Miaoqi, Miaoyun, Miaozhuang. Three-leaf stage early seedlings, one plant per hole, after the seedlings, 5 to 10 kilograms of urea per acre, spray once a drug to control aphids, armyworms; Hummer and other 40% of chlorinated fruit juice emulsion 1500 times.
3. Sticky corn is prone to bifurcation habits, and it is found that the scorpion should be removed, the sooner the better, otherwise the oxygen consumption will be consumed, which will affect the commercialization of the ear and ear. In the case of an abnormal year, it is easy to have multiple ears, and it is best to leave only 1 or 2 ears above. It is best to sell the first ear of the green ear, and the node is 6-8 leaves, so as to promote the big bar, the grain is full and good.
4. 30 kg of fertilization in the jointing period, to ensure the water supply for the prevention of "ka neck drought", when the relative water holding capacity in the field is less than 70%, it is necessary to pour 1 to 2 times of water.
5. Controlling corn mash is especially important for fresh corn than for grain corn. Because the insect ear completely lost the value of the commodity, and the grain corn only reduced production. Control 3% carbofuran granules or 2.5% zinc sulphate granules.
When the fringe is spit, it can be artificially assisted in pollination.
5. Harvest at the right time
Green food sticky corn is sticky and fragrant at the end of milk ripening, with good quality and best palatability. It is the best harvesting period. Pay attention to the early morning harvest before the listing to avoid slumping and poor color appearance.
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