Dehydration of corn and its integrated defense methods
Volt usually refers to the three-volt period from mid-July to mid-August. The drought that occurred during this period was commonly referred to as volt (summer) drought. The drought at this time caused the most serious damage to corn, so people called the drought that occurred during this period of corn as the "card drought." Card neck drought will affect the summer corn tasseling, flowering and silking, pollination and fruition, and then cause serious reduction in production. First, the drought standard of summer drought corn drought is the standard of precipitation in late July to mid-August, the continuous rain for more than two days is less than 50mm, and the total rainfall of 30 days is less than 100mm. The soil moisture standard in drought days is mild drought when the soil moisture reaches 65%-70% of the maximum water capacity, moderate drought when 55%-65%, and severe drought when it is less than 55%. The morphological indicators of the drought are: short-term curly wilting at the noon of the plantlets at the booting stage, flowering pollination stage and grain forming stage of the corn, and mild wilting as mild drought. The upper and lower leaves of the maize plant are wilted to moderate drought at noon, and the corn plants are up and down. Persistent wilting of leaves (not returning to normal at night) is severe drought. Second, the characteristics of drought and damage to summer maize in Anhui Province, the value of booting, flowering pollination and grain formation period, is also the summer water demand for most of the water and the most sensitive to drought response period. Maize booting to grain formation is the period of the most drought-tolerant corn in a lifetime. Drought has a long-lasting effect during this period; in particular, it is irreversible to persist during the flowering and fruiting period. Once it encounters a long period of severe drought, it will cause pollen death, dried filaments, and can not be pollinated, resulting in a significant reduction in production. Therefore, there is a "rural drought is not a drought, reduced by half the drought" of the farm. A large number of test results show that the range of production cuts after severe growth disasters suffered from severe drought disasters is quite different. In general, the output during jointing period is reduced by 25%, the booting period is reduced by 30%, and the flowering period is 40%. Third, the response to drought and drought of maize The drought must meet the moderate standard as soon as possible to irrigate, in order to facilitate the normal flowering of corn, pollination and fruiting, or to ensure the smooth formation of grain formation and grouting. It is noteworthy that the drought is caused by the control of the subtropical high over the Western Pacific, and this subtropical high has a wide range of forces and often lasts for a long time, resulting in high drought severity, long time, and heavy damage. Therefore, once drought occurs, it is necessary to flood the water with rich water and timely irrigation of “harvest water†to play a role in ensuring the irrigation and harvesting. Otherwise, until the drought is seriously harmed, when the seedlings are coked and the water source is depleted, they will be poured into “saving waterâ€, which often results in less work. Http:// Manual Massage Foot Spa Massager A manual massage Foot Spa Massager is a device designed to provide a relaxing and therapeutic foot massage. It is a manually operated handheld device, which means it does not require electricity or batteries to operate. The massager is made up of several parts, including the handle, rollers, and knobs.
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