Skillful use of calcium Fertilizer to increase yield of Peanut
Peanut is a calcium-loving crop. Calcium fertilizer can promote peanut root growth, increase root activity, prevent peanut premature senescence, promote peanut kernel fullness, increase 100-grain weight and protein content, and enhance peanut disease resistance. The application of this fertilizer to peanuts should be due to the fertilizer system of the soil: because peanuts are not tolerant to saline-alkali, acid fertilizers containing calcium should be applied on saline-alkali soils lacking calcium, which can not only meet the nutritional needs of peanuts for calcium, but also neutralize the soil. alleviate and correct the harm of saline-alkali to peanuts. Should be timely applied: because peanuts in the growth of new roots, young roots, fruit needles, absolutely can not lack calcium, so the time of calcium application, that is, should do the base fertilizer early application and flower and fruit needle just appeared topdressing, applied twice. To apply an appropriate amount: general acid soil lime 50-60 kg per mu, or calcium magnesium phosphate fertilizer 35-40 kg, alkaline soil can apply 30 kg calcium superphosphate per mu. The application amount of calcium fertilizer should not be too small, otherwise, the yield increase is not obvious. Do not have too much, otherwise, it will not only cause waste, but also destroy the soil structure and reduce the economic benefits.
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Occurrence and control of peanut bacterial wilt
Peanut bacterial wilt, commonly known as "green disease", "dead seedling", "plague" and "dead vine", is an important disease in peanut producing areas. The incidence rate of general plots is 10%-25%, and the incidence of serious plots is more than 50%. Peanut bacterial wilt is a typical vascular disease, which can occur in the whole growth period of peanut.
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What are the requirements of soil conditions for high yield of peanut
(1) the whole soil layer is deep. The whole soil layer of high-yield fields should be more than 50 centimeters. 99% of peanut roots are distributed within 50 cm, and the main roots are more than 1 meter deep. Therefore, the depth of soil is very important for the growth and development of peanut roots. (2) the tillage layer is active. Thickness in the range of 30 cm is Xuan live fertile tillage layer, also.
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