Grasping the key period, high yield of peanuts is not a dream. Dayangzhuang Village, Liangshui Town, Liaocheng City is a famous peanut planting area in northwestern Shandong. Because the sandy loam soil is suitable for planting peanuts, the peanut yield is not high, generally 800-1000. Jin/mu, Professor Wang Jingyong believes that the key period can be grasped, and the peanut production can be improved a lot.
Choosing a good species and doing a good job of seed dressing, Wang Jingyong suggested using Fenghua series peanut seeds, and then according to the actual situation in the local area, the cooperatives can choose the seed dressing agent.
Do a good job of fertilization, control the proportion of fertilizer use, not too much fertilizer, organic fertilizer is too little. The base fertilizer is applied to the base fertilizer, which accounts for 80%-90% of the total fertilizer. Some peanut fields only need to apply the base fertilizer. Even if the fertilizer is applied less or not, the high yield can be obtained, which indicates the importance of the base fertilizer. Generally, 2000 kg of high-quality farm animal manure per mu is used, or fertilizer with 18-18-9 of Tianji is used.
Skillful application of topdressing, first, lightly chasing seedlings, peanut seedlings can promote early, strong seedlings, branches, so that flowers and fruits increase, yield increases, seedlings need less fertilizer, but insufficient base fertilizer or no base fertilizer The quick-acting nitrogen fertilizer should be properly applied to promote the growth of seedlings and flower bud differentiation. It can be directly used before 3-4 kg of urea per acre, or 250-300 kg of decomposed human and animal manure, and added with phosphorus and potassium fertilizer. The second is to apply flower needle fertilizer. The needle period requires more fertilizer, and the effect is to promote more flowering, more species, and more results. Generally, 4-5 kg ​​of urea, 6-7 kg of diammonium phosphate, 5-6 kg of potassium sulfate, or 50-75 kg of plant ash are applied per mu. The third is to apply the pod fertilizer. The pod-forming period is the period in which the most fertilizer is needed, and it is also the key period for promoting the accumulation of dry matter and the development of fruit needles and pods. Grab the application of 4-5 kg ​​of diammonium phosphate and 6-8 kg of superphosphate per acre before the closure of the line. For the application of boron and zinc fertilizer, spray 2-3 times when applying the pod fertilizer. %-0.2% zinc sulfate or borax aqueous solution. In the late growth stage, peanuts are not suitable for topdressing because the plants have been sealed. However, for those with de-fertilization, the urea solution with a concentration of 1%-2% can be sprayed with fertilizer to improve the seed setting rate and fruit growth.
Peanut has a key fertilization period. Before the flowering of the peanut, a large amount of calcium fertilizer is needed. The calcium nitrate ammonium nitrate can be selected from the ridge of 7.5-10 kg per mu, which can increase the yield by 10%-15%.
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