At present, the development of peanuts in Chongqing will enter the stage of the next pinch, and the growth of peanuts will shift from vegetative growth to reproductive growth. All localities must strengthen the management of peanuts in the field of pinning, control peanut longevity, prevent premature decay, and promote nutrition to peanuts. Transferred, so peanut production should focus on the following tasks:
First, cultivator soil: in the peanuts under the needle period of a cultivator weeding, the cultivator should be deep, and combined cultivator soil, shorten the distance from the fruit needle into the soil, in order to facilitate the fruit into the soil. Care should be taken when earth is soiled to prevent over pressure and prevent loosening or bumping into the soil. The cultivation time should be appropriate. If the result is too early, the branches will tend to pick up, which will not achieve the effect of raising the soil and reduce the number of results. If it is too late, the time for the rapid development of the pods will be shortened and the effect of soil cultivation will be reduced. Before the plants have been sealed, the soil with low-knotted and first-stretched needles is most suitable for soil after flowering.
Second, to see Miao Fei: peanuts after flowering rhizobium nitrogen fixation ability is poor, generally under the conditions of the previous fertilization, after flowering, no longer apply topdressing nitrogen fertilizer. If the peanut plants are thin and the leaves yellow, showing signs of premature aging, foliar spray can be used to supplement the nutrients. Per acre spraying 1% -2% urea and 0.2% -0.3% potassium dihydrogen phosphate mixture 50 kg. The growth of the plants is too thin, showing obvious symptoms of lack of fertilizer, and can also apply 10-15 kg/mu of nitrophosphate.
Third, dry irrigation irrigation row: Peanut flowering in the next needle period in case of drought will cause premature plant failure, reduced flowering, and even flowering interrupted, affecting the development of fruit acupuncture, it should be timely watering. To spray irrigation is better, to prevent soil compaction, is conducive to fruit into the soil. In case of damage, drain water in time to prevent the accumulation of water and affect the growth of peanuts.
Fourth, chemical regulation: In order to prevent peanuts grow and speed up the conversion of nutrition to pods, paclobutrazol can be sprayed about 20 days before the peanuts are harvested, in order to achieve an increase in the number of effective lateral branches, the resistance of the plants is enhanced, the results are many, and the fruit rate is high. effect. Application method: Use 15% paclobutrazol wettable powder 50 g water 30 kg.
Fifth, disease prevention and pest management: Peanut disease in the middle and late stage mainly include bacterial wilt, leaf spot, brown spot, etc., control bacterial wilt with green and soaked rick 30kg watered 15 kg, irrigated, 7-10 days irrigation 1 Times, even irrigation 2-3 times. In the middle and late onset of illness: In severe cases, in order to get more rapid results, some chemicals may be added when irrigating or spraying, such as: S. lycium 50ml + hymexazol 15g or metalaxyl manganese zinc 25g or 20% Azole 20g. For control of leaf spot and brown spot, 70% thiophanate-methyl wettable powder 800 times liquid or 50% carbendazim wettable powder 800 times liquid can be used for spray control, spraying once every 7-10 days, even spraying 2 times. ~ 3 times, can receive better control effect.
The pests in the later period of peanut mainly include aphids, cockroaches, and golden needles. After mid-June, 50% “phoxim†200 ml can be diluted with 50 kg of water and then sprayed on the roots, then watered, or sprayed before the rain. . It is also possible to add 10-15 kilograms of water to mix sand and produce poisonous soil. Before the rain, it can be swayed or sprinkled with water after spreading. If underground pests are found, timely iodide or phoxim should be used for irrigation. The fungicide and the insecticide can also be mixed and sprayed together so as to play a role of both diseases and insect pests.
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