Diagnosis and Treatment of Potassium Deficiency in Rice
2018-06-12 10:01:42
According to the relevant data, it is confirmed that most of the cultivated land in the red soil region of southern China has different levels of potassium deficiency, which has become one of the factors affecting rice production. Especially in recent years, the reason for the expansion of hybrid rice cultivation and partial application of nitrogen fertilizer and rainfall erosion is an important reason for the increase of potassium deficiency. In addition to the lack of potassium in the soil itself, there are poor drainage, excessive drainage and rainfall, drought from wet mutations and so on. 1, potassium deficiency symptoms. The early signs of potassium deficiency in rice plants were mostly dwarfing, and the leaves were dark green in color. They usually grew irregularly in the field, reduced the oxidative power of the roots, and turned black and rotten. On the contrary, the roots of the potassium plants were brownish brown. In addition, potassium deficiency is aging and premature aging, and the older leaves of potassium deficiency are chlorotic. Below the chlorotic area, irregular brown rust lesions appear, and brown spots are particularly prone to occur. The lesion size and shape are different from those of rice varieties. 2, processing. Generally, there are less humus-rich sandy foot fields and red soils next to low-fertilizer fields, about 15 kg of potassium oxide is used for mu, and about 10 kg is used for mu fields. At the same time, we must pay attention to soil fertilization and water, plant protection and Other management measures when combined, the general application of potassium should be used as base fertilizer, can make potassium play its functional effect in the Honda, and ultimately can promote and increase crop yield and other effects.
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