Cockroaches have a wide range of growth adaptability and can grow in various types of soils, and they all can obtain a certain amount of production. However, they have become a new industry in the adjustment of agricultural structure and have become commodities to the market, creating higher economic benefits. It is necessary to break through the old traditional concepts, improve the traditional planting methods and management methods, intensively and meticulously to other economic crops, and grasp them as a leading industry. Therefore, the following points should be mastered in selecting land parcels, irrigation conditions, seeding techniques, and field management measures:
One, site preparation
1. Selection of land: Select one or two types of land with good soil fertility and complete water conservancy facilities. Infertile soil and land with no water conservancy facilities can only be used as an agricultural measure to improve soil fertility, and can not obtain ideal benefits. For plots that are prone to stagnant water after low sunken rain, the 48 hours of water soaking will suffocate. In planting, it is necessary to focus on a large area of ​​contiguous pieces so as to be suitable for various mechanical operations.
2, site preparation
(1) The alfalfa is a perennial legume forage, and the general rotation period is 5 to 6 years. Therefore, before sowing, it is necessary to deepen, shake, compact, and meet various requirements in order to facilitate emergence after emergence.
(2) To level the land, require the ground to be level and not be uneven, in order to influence the mechanical harvesting and binding operations and the income of the growers (the land will be uneven when the harvesting and baling will occur).
(3) For the weedy-growing plots, ground spraying with trifluralin (100 ml/mu) is conducted 7-10 days before sowing so as to reduce the damage of weeds. It is not easy to kill the root weed type weeds for perennials. Before spraying with paraquat, glyphosate, 2.4? D.
(4) Fertilization: The alfalfa root system is well-developed, and it is deeply rooted. Therefore, it is necessary to combine soil preparation before planting. Each farm has 1 to 2 square meters of farm fertilizer, 50 to 100 kg of superphosphate as base fertilizer, or 30 kg of diammonium and 20 kg of fertilizer. Urea.
(5) For irrigated land without sprinkler facilities, the mowing and mowing by soil preparation are combined with soil ridges to facilitate field watering in the future. The mower width is 2.5 meters.
Second, sowing
1, sowing date
While spring sowing, summer sowing and autumn sowing can be used, autumn sowing is the best, autumn weeds are less, and soil moisture is sufficient to facilitate emergence and root growth. The best period is August 10-15, suitable for sowing time. Before September 15.
2, sowing method: The use of mechanical drilling method, suitable row spacing 30 cm, easy to cultivator weeding, chase fertilizer material.
3, sowing volume: generally 0.6? 0.7 kg / acre (seeds germination rate to be more than 95%), sowing too much will affect the population of Daejeon, seedlings, seedlings weak. In order to facilitate the control of sowing volume, diammonium or monoammonium that has been sieved may be mixed with seeds.
4, sowing depth: generally 0.5? 2 cm, soil viscosity should be more shallow, the purpose is to produce a good seedlings.
Third, field management
1, weeding weeding
In order to ensure the quality and purity of the sorghum forage, to meet the requirements of domestic and international markets for commodity grass and the direct economic benefits of growers, the field management of cultivating and weeding is particularly important. Therefore, cultivating and weeding should be carried out in time for all stages of sorghum growth. , to ensure that no shortage of grass, to ensure the acquisition of work and export quality and requirements (weed content of 5% or less).
2, top dressing
After returning green and harvesting once a year, according to the fertility of the soil and the amount of base fertilizer, urea topdresses 2.5 to 5 kilograms per gram, potassium chloride 2-4 kilograms, and phosphate fertilizer 10 kilograms. In order to ensure the next growth needs and production requirements.
3, watering
In order to increase the yield of alfalfa and achieve high-quality, high-yield and high-efficiency, according to precipitation and field conditions, the overwinter water and green water should be poured timely in combination with topdressing. After each harvest, the water should be promptly watered to promote regeneration.
4, seedling reseeding
After the emergence of seedlings, the seedlings should be promptly inspected, and where there is a shortage of seedling monopoly, it is necessary to replant in a timely manner.
5. Pest control
The common pests are: aphids, thrips, ground tigers, cotton aphids, etc., but generally do not cause harm. Under special natural conditions, if pests occur, they will be symptomatic for the actual situation. Rat poisoning can be combined with watering and drug blocking.
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