When irrigating, many farmers think that the better the watering, the better and the better. This is not the case.
Loss of nutrients The nutrients in the soil include fertilizers applied to the soil. Most of them are dissolved in the soil solution in an ionic state, and they are watered more. The nutrients will be lost to the ground or deep water with the water, and the roots will not absorb them, causing waste.
Destruction of soil watering is too much, long-term accumulation of water in the soil, soil colloid material is diluted and lost, affect the formation of granule structure, resulting in decreased physical and chemical properties of soil, easy to bond, while the soil aerobic microorganisms died due to more water and less air, Fertility fell.
Hypoxia causes excessive watering of the roots. Oxygen is reduced in the soil and root respiration is hindered, affecting root growth. If the water delay is too long, it will cause dead roots.
To lower the ground temperature to water too much, because of the large heat capacity of the water, the ground temperature rises slowly, and the water absorbs heat, it will also reduce the ground temperature, which is not conducive to crop growth.
Excessive watering of the disease, increased humidity in the field, prolonged duration, leading to the prevalence of diseases such as rust, defoliation, rot disease.
Reduced quality Watering when the fruit is ripe is not conducive to the accumulation of sugar in the fruit, which will reduce the sweetness and affect the coloring; too much watering late in the wheat and corn will be greedy and late.
Too much water for energy and water is not only a waste of water resources but also a waste of machinery, fuel or electricity.
Therefore, do not overdo it with water. How much water is suitable for pouring? Different crops, different soil quality, different plots, different temperatures, and different periods of the same crop, the amount of watering is different. The seedling stage and the few leaves need less water in the spring, the largest water requirement is when the leaf area is the largest, and more must be poured; the ripening period is to prevent late-ripe and late-maturing, and less sugar should be poured; the high temperature evaporation in summer is more likely to be poured; In the rainy season, it is often necessary to do little raining; in clay, the water holding capacity is large; in sand land and in floodplains, the leakage is soon to be poured; in the sloping land, the loss of nutrients is less likely to be poured. The general soil moisture content is maintained at 60% to 80%.
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