High quality cultivation techniques of quick frozen sweet corn (2)

Fushun Jinyu Food Co., LTD.,Continue to explain the cultivation techniques of sweet corn

5 reasonable close planting

If the planting density of sweet corn is too high, the ears produced are conducive to meet the standard of commodity requirements; if the planting density is too small, the yield per unit area will decrease, which is conducive to increasing production income. The planting density of sweet corn is generally 3500-4000 plants per mu. In the aspect of inter seedling determination, the method of 2-3 times thinning can be used to remove weak strong seedlings, to leave even uniform seedlings, to reserve balanced growth double plants at one end both ends in the absence of seedlings. In the period of 3-4 leaves, the seedlings were kept about 1.3 times of the number of ears per mu. The seedlings were fixed at the stage of 5-6 leaves, the weak plants that could be heading were removed in time at the tasseling silking stage. In addition, the tillering characteristics of sweet corn are good, the tillers can form ears. In order to ensure the quality of ear, the extra tillers should be removed.

6. Fertilizer water management

Under the target yield of 400-500kg per mu, the amount of fertilizer application is about 17-18kg of pure nitrogen, 4-5kg of phosphorus pentoxide 4-5kg of potassium oxide. The base fertilizer accounts for about 60% of the total fertilizer amount, the top dressing fertilizer accounts for about 40% of the total fertilizer amount. The top dressing fertilizer is mainly jointing fertilizer ear fertilizer. In general, the field with sufficient basal seed fertilizer high yield level usually adopts the topdressing method of "light before heavy after", that is, light application of jointing fertilizer heavy application of ear fertilizer, the ratio of the two is 4:6; for the field with insufficient base seed fertilizer poor seedling condition, the topdressing method of "heavy before but light after" is adopted, that is, the ratio of fertilizer application amount is 6:4. Improve the ditch system, so that drought can irrigate, waterlogging can discharge, drought flood to ensure high yield. When the soil moisture content is lower than the lower limit of the appropriate water content, irrigation should be carried out. Generally, there are four times of irrigation in the growth period of sweet corn, namely, jointing stage, bell mouth stage, tasseling stage filling stage. When waterlogging occurs, it is necessary to do a good job of drainage waterlogging reduction to ensure the normal growth development of sweet corn.

7. Pest control

Sweet corn is sweeter than ordinary corn, which is easy to cause harm of corn borer, aphid other pests, resulting in the decline of the quality of fruit ear. Therefore, we should strengthen prevention control. Other aspects should also adhere to the principle of "giving priority to agricultural control, physical control biological control, supplemented by chemical control", with prevention first comprehensive prevention control.

8 timely harvest

If the sweet corn is harvested earlier, the content of sugar in the kernel is too small, the sugar content is low, the flavor is poor; if the sweet corn is harvested late, the sugar in the kernel is converted into starch, the peel becomes thicker, the residue in the mouth is more, so the special flavor of sweet corn is lost, so it should be harvested in time. When determining the harvest time, we can determine whether to harvest by observing the changes of silk, pinching the tender seeds with fingers tasting the sweetness. The harvest time is generally 22-30 days after silking.

The above is the quick-frozen sweet corn manufacturers about the raw materials of frozen sweet corn - sweet corn cultivation technology, welcome to consult!