Peanut's pod stage refers to the period from the initial emergence of chicken-headed young fruit to the first full fruiting. It lasts for about 25-30 days (about 20 days of live peanuts in summer) and is a critical period for determining the number of pods. The spring peanuts in Shandong region lasted from early July to August, and summer sowing peanuts from early August to late. Peanuts are characterized by fertility during the period of vegetative growth of the aboveground and growth of the subterranean reproductive body. After the rain, the growth of stems and leaves is accelerated, the internodes are elongated, the area of ​​the vegetative body rapidly expands to the peak; a large number of fruit needles (ovars handles) are added to the soil, and the ovary is sent to the appropriate depth to form young fruits and rapidly expand and enrich; damage to peanuts Adult worms enter the field of peanuts to lay eggs, and larvae are hatched about 7 days later. The main task of field management is to prompt the vegetative body to reach peak value as soon as possible, to maintain a steady growth without lodging, to ensure that the young fruit that has been formed into the soil form as many fruits with economic value as possible, and to prevent the occurrence of pupa and other underground pests. The main measures for field management are:
First, the results area top dressing According to the peanut fruit and fruit surface can absorb nutrients from the soil, and mainly to provide their own characteristics, in the next peanut or the beginning of the scab to the peanut planting cluster per mu 10 to 15 Kilograms of compound fertilizers mainly composed of phosphorus and calcium can increase production by 50 to 100 kilograms, and the quality can also be improved.
Second, foliar spray fertilizer Peanut spray fertilizer can enhance flower growth potential, improve disease resistance and environmental resistance, with rapid absorption, rapid effect, high utilization, low input costs, good returns and many other advantages. It can be sprayed in the whole growth period or sprayed on the front and back of the leaf several times. In recent years, trials and practices have proved to be effective, and the number of foliar fertilizers that are suitable for spraying at low prices in each growing period is “big success†and “Arcadianâ€. In high-yielding fields and acidic soil plots, calcium deficiency may affect yield and quality. Foliage is sprayed with Jiataifeng, which is rich in complex amino acid calcium, and can quickly supplement calcium, magnesium and other elements, increase the number of results and improve the quality of pods.
Third, regulate the growth of peanuts after the rapid growth of peanut growth, should be grasped about 30 days after the initial flowering, plants have been or close to the closure of the interval of 15 days or even spray twice 1000 ~ 1200 times "Zhuang satuan", can effectively inhibit Increased stems, to prevent lodging, delayed defoliation, promote the growth and development of pods, increase production by 13%. Than Jiu (B9) and conditioners containing this ingredient have long been banned. Paclobutrazol (PP333) and conditioners containing this ingredient are liable to cause early defoliation, with little or no increase in yield.
Fourth, control insect pests and other underground pests after hatching and hatching larvae survival and growth, bollworm, bridge insects and other leaf pests harm harm. In combination with topdressing, peanuts were sprinkled with "quick-killing insecticide powdered fertilizer" or "carbofuran" poisonous soil. It was found that insecticides were sprayed when the leaves were damaged.
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