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. The range of thickness of 30 cm is the fertile tillage layer of Xuan, and it is also the distribution layer of main root group with the strongest fertilizer absorption capacity of peanut. (3) the fruiting layer is loose. The topsoil layer above 10 cm is the fruiting layer in which the peanut rhizome grows and the fruit needle enters the soil. It is required that the soil permeability should be good, not loose when dry, not sticky when wet? Sandy loam. The content of organic matter is more than 1%, the content of total nitrogen is 0.05% to 0.07%, the content of available phosphorus is 24/1000000 to 25, the content of available potassium is 54/1000000 to 74, pH7~8. No peanuts or non-stubble plots for more than 3 years.
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Skillful use of calcium Fertilizer to increase yield of Peanut
Peanut root-knot nematode disease is an important disease of peanuts, generally reducing yield by 2030%, serious cases up to 70,80%, or even no harvest. First, the symptom of this disease mainly harms the root, any part of peanut that can be buried (roots, pods, etc.) can be damaged by nematodes. Half a month after sowing, when the main root of peanut begins to grow, the line.
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How to prevent soybean mosaic disease
Suihua City, Heilongjiang Province is the main soybean producing area, with an area of nearly 300000 hectares planted all the year round. In recent years。 The occurrence of soybean mosaic disease has a trend of increasing year by year, most plots have occurred, the field disease plant rate is generally about 4.8%, serious up to more than 20%, soybean grain brown (black) spot grain rate is more than 10%.
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