Choose the best species
Covering with plastic film can increase soil temperature, enhance moisture retention capacity, and increase fertilizer utilization. Peanut has a well-developed root system and high nutrient absorption and utilization rate, so the increase in peanut production is relatively strong. In order to improve the efficiency of planting, mulch mulch cultivation should choose medium and large fruit varieties with greater yield potential, higher yield, and strong disease resistance.
Formula fertilization
Peanut is a kind of high-yield oil-bearing crop, which has a large demand for fertilizers. Because of its nitrogen fixation effect, the demand for nitrogen fertilizers is not very large, but the demand for phosphorus and potassium fertilizers is relatively large. To achieve high yields of mulched spring peanuts, adequate nutrient supply must be ensured, and organic fertilizers and chemical fertilizers must be used in combination. All organic fertilizers are applied as base fertilizer at one time, with an amount of 5,000 kilograms of farmyard manure and 50 kilograms of potassium sulfate compound fertilizer per mu. Increased application of calcium fertilizer can effectively prevent fruit rot and black plaster spots. Applying 50 kg of superphosphate per mu; adding 1 kg of boron fertilizer and zinc fertilizer can significantly increase peanut fruit setting rate and increase pod plumpness.
Medicament seed dressing
Premature peeling of peanut seeds will easily lead to the degradation of seed quality, the seeds will lose the protection of the outer shell, will absorb bad gases and harmful substances in the air, and the activity will be greatly reduced. Peanut seeds should be peeled 15 days before sowing. Put the peeled seeds in a woven bag and store them in a ventilated and dry place. Three to five days before planting, the peanut seeds are spread out on the ground to dry for three to five hours before or after noon when the weather is sunny. The sun-dried seeds are selected and classified, and diseased, residual, and germinated seeds are sorted out. Afterwards, using Shileshi and other fungicides to dress seeds can effectively prevent the occurrence of peanut stem rot and root rot.
Sowing in time
There are often two misunderstandings in production. One is the early sowing date and the too early sowing date of mulched peanuts. Due to the unstable temperature in early spring, and even the cold or cold wave in the early spring, it will pose a great threat to the early sowing peanuts. Rarely, it causes lack of seedlings and ridges, and serious stubble destruction. The other is to delay the broadcast. Delayed sowing date, the role of mulching film can not be fully utilized, and the corresponding delay in the market period will affect the income of growers. Experiments have shown that the sowing date of mulched spring peanuts is generally about 10 days earlier than that of open-field spring sowing. In central and southern Hebei, April 15-20 is appropriate, and in eastern Hebei, it is delayed by one week.
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