According to relevant data, most of the cultivated land in the red soil region of southern China has different degrees of potassium deficiency, which has become one of the factors affecting rice yield increase. In particular, in recent years, the expansion of hybrid rice cultivation and the reasons for partial application of nitrogen fertilizer and rainfall scouring are important reasons for the increase in potassium deficiency. In addition to the lack of potassium in the soil itself, there are also poor drainage, excessive drainage and rainfall, from drought to drought and so on.
1, the symptoms of potassium deficiency. The early signs of potassium deficiency in rice plants are mostly dwarfed, the leaves are dark green, and the growth is not uniform in the field. The roots have reduced oxidative power and become black and rotten roots. On the contrary, the roots of the potassium plants are brown. Moreover, the lack of potassium aging premature aging, the leaf tips of the older leaves that are deficient in potassium are chlorotic. Under the chlorotic area, irregular brown rust lesions appear, which is particularly prone to brown spot disease, and the size and shape of the lesions are different from those of rice varieties.
2, processing. Generally, the sandy shallow foot fields with less humus and the low-fertilizer fields in the red soil near the post are used for about 15 kg of potassium oxide, and about 10 kg for the fertile fields. At the same time, we must pay attention to the combination of soil formula fertilization and water, plant protection and other management measures, the general application of potassium as a base fertilizer, can make potassium play its functional effects in Honda, and ultimately promote and improve crop yield and other effects.
1, the symptoms of potassium deficiency. The early signs of potassium deficiency in rice plants are mostly dwarfed, the leaves are dark green, and the growth is not uniform in the field. The roots have reduced oxidative power and become black and rotten roots. On the contrary, the roots of the potassium plants are brown. Moreover, the lack of potassium aging premature aging, the leaf tips of the older leaves that are deficient in potassium are chlorotic. Under the chlorotic area, irregular brown rust lesions appear, which is particularly prone to brown spot disease, and the size and shape of the lesions are different from those of rice varieties.
2, processing. Generally, the sandy shallow foot fields with less humus and the low-fertilizer fields in the red soil near the post are used for about 15 kg of potassium oxide, and about 10 kg for the fertile fields. At the same time, we must pay attention to the combination of soil formula fertilization and water, plant protection and other management measures, the general application of potassium as a base fertilizer, can make potassium play its functional effects in Honda, and ultimately promote and improve crop yield and other effects.
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