Arrived every year the summer when, a lot of places of countrywide can enter a flood season, rainwater grow in quantity, some places can issue big rainstorm continuously, cause a harm to the crops in the ground, at this moment, it is the phase that summerly corn is in seedling stage fitly, the friend asked, when summerly corn seedling stage, if how rainwater passes to should do more? Can you grow to corn what effect to cause? Additional, what to prevent and remedy measure to have? Below, taking these issues, young assistant says in detail to everybody.
1, root system grows suffocate suffocate, as a result of field have seeper, isolated root system and airy contact, bring about root system to cannot breathe normally, grow suffocate suffocate, a few problems meet sequel appear (weak seedling, later period is for instance easy lodging) .
2, grass is killed serious, after corn seedling stage encounters seeper, growing is to suffer restrained, but fireweed is done not have however, weeds grows capability is strong, after seeper retire, the way corp is growing a day an appearance, prevent and cure not in time, bring very great harm.
3, soil hardens, what rain leaves summer is much, those who work is fast also, there are a lot of seepers today for instance, after it is discharged slowly, the weather of high temperature sun that appears a few days continuously, the soil in the ground can happen harden symptom, same meeting effect grows of corn normally.
4, plant diseases and insect pests is aggravating, common saying says " a heavy rain a calamity " , what the calamity here says not only is flood, still have the calamity of plant diseases and insect pests, usually, after heavy rain passes, it is the important period that plant diseases and insect pests erupts, hit medicine not in time to prevent and cure, consequence dare be not imagined.
5, lodging, the corn of seedling stage also is meeting lodging, although the young plant is small, but the sort of big rainstorm plus fresh gale weather, also be to be able to produce lodging phenomenon.
1, catchment
Need not say at this o'clock more, seasonable catchment is first step, it is OK also to can wait for rain to stop raining go in the process, before suggest nevertheless or raining, had made good drainage step, can undertake according to weather forecast.
2, delimit v hoe intertill
When after rainwater eduction goes, when the person can going down in the ground, delimit in time v hoe, intertill loosen the soil, the purpose has 2, avoid soil to harden on one hand, enhanced soil appear a gender, grow what be helpful for root system and corn normally, on the other hand, also have effect of certain prevent and kill off to fireweed, kill two birds with one stone.
3, weed
Said above, delimit v hoe intertill can prevent and kill off one part fireweed, if field fireweed is overmuch, had not made the lot of herbicide, look for an appropriate weather, in the morning before 10 o'clock, afternoon after 4 o'clock, go in the ground gush makes herbicide, because be in seedling stage, the appropriate period that weeds just about (be more than 8 leaf to want special attention) , can choose careless ketone of sulphur of grand of smoke Mi sulphur, saltpetre, bad people to go ferry, binary or 3 yuan answer dispensation agent undertakes gush is hit.
4, plant diseases and insect pests of prevention and cure
The word of insect pest, besides subterranean pest (mole cricket, grub, wireworm, cutworm) outside, the part on the ground still has thrips, armyworm to wait, common preservative agent has, subterranean pest can use laborious sulfur phosphor or root of fill of tick of kill with poison; The word of thrips can use amidine of bug of Bi bug Lin, Ding; The word of armyworm, usable Jia Weiyan.
Seedling stage disease is very much also, the seedling is for instance withered ill, thick shrink disease of ill, cauline radical corrupt, the harm is very great, for preservative agent departure, seedling withered disease can use the drug such as evil mildew spirit, much bacterium spirit; Thick shrink disease can choose Bi bug Lin + bacterium poison is clear + phosphoric acid 2 hydrogen Potassium (insecticide + disease-resistant toxic + face of blade is fat) have treatment integratedly; Disease of cauline radical corrupt can choose Qing Dynasty of spirit of zinc of era dark manganese, much bacterium, 100 bacterium to wait, be no good, interval is controlled 10 days, come again.
Additional, if be stricken be hit by a natural adversity and special serious, after corn lodging, this plants even what the root is developed, destroy in time kind, can reseed a few bear period shorter breed, OK also replant is other crop, reduce a loss.
The harm that is wided by water about corn seedling stage and remedy measure, young assistant says so much first, summertime rain is more, the hope cultivates the friend of corn, great attention, since work laboriously is planted,went up, manage it well, although nearly two years price quotations is not particularly good, but output is some more, accrual or meeting increase of a bit, do you say?
