The technology is based on deep-seedling, deep fertilization and precision seeding as the core of soybean comprehensive high-yield cultivation techniques. This new technology is based on the success of the promotion of soybean sowing in Heilongjiang province. It is based on the practice of “Three Ridges†cultivator developed by Bayi Agricultural University to perform deep soil loosening, and combined with the promotion of deep tillage in the 1970s. The successful experience has enabled the combination of precision seeding techniques and deep-tillage methods to form a comprehensive high-yielding cultivation technique for soybeans. Mainly suitable for Heilongjiang, Inner Mongolia most of the soybean production areas to promote, generally more than 20% increase in production than conventional cultivation. The mechanism of yield increase: Firstly, deep pine can break the plow bottom layer, deepen the tillage layer, and improve the structure of the plough layer, which is conducive to the growth and development of soybean roots and the formation of root nodules. Deeply create a coexistent soil structure, enhance the ability of soil water retention and drought resistance. Shensong can also play a role in preventing cold, increasing temperature, loosening the soil, and promoting the early growth of soybeans. Second, the deep application of chemical fertilizers can overcome the phenomenon of seed burning and seedling burning in the same place, and can reduce the volatilization and loss of chemical fertilizers and increase the use of chemical fertilizers. The third is the implementation of precision sowing can be based on the rational close planting, to achieve a uniform distribution of plants, to solve the previous problems in the production of soybean uneven thin, lack of seedlings, and improve the soybean planting environment, so that The structure of the group is further rationalized, and the conflicts between light, heat, water, and fertilizer are well coordinated. The main technical points: First, deep loose soil. The depth of deep looseness is based on the breaking of the bottom of the plough, and the depth of the deep plough is usually 25 to 30 cm. According to the different deep loose parts, it can be divided into ridge body deep loose, ridge ditch deep loose and all-round deep loose. Deep ridges are also known as deep ridges. There are two methods: one is deep soil preparation, also known as deep ridging. This method is combined with deep ridges, such as deep loosing and Ploughing or hoeing is based on deep loose ridges in terms of soil preparation and deep slashing; another type of deep slashes is deep sowing, using large “three ridge†cultivators to deepen the ridge while deepening. Fertilizing and fine seeding, this method is completed with three techniques at a time. Deep digging of the ditch is to deepen the ditch with a deep loose shovel. According to the different periods, it can be divided into long ridge ditch before sowing and seedling ridge ditch; It is also possible to use the small ridge and three tillage machines to sow the ditch at the same time. All-round soil deep loosening refers to the use of a full-range deep-soiler to loosen the entire plough layer, which can make the soil layer undisturbed and deepen the cultivating layer. The depth of deep soil can reach more than 50 cm. The second is layered deep fertilization, chemical fertilizer as a seed fertilizer, the depth of fertilization should be planted at 5 to 6 cm; fertilizer as a base fertilizer, the depth of fertilization should reach 10 to 15 cm. At present, the small-scale precision seeders produced by the agricultural machinery factories in the counties (cities) such as Huachuan, Mingshui and Dedu, which are currently used in production, can do deep fertilization with fertilizers; large “three-ridge†tillage planters produced by Ylang and Helen. Not only deep fertilization can be done, but also fertilizer and base fertilizer can be applied at the same time, that is, layered fertilization. The third is precision seeding. At present, except where there are sufficient places for labor, farmers also use artificial precision seeding methods such as manual gazing and manual dressing, and most of the places have used mechanical precision sowing. Mechanical precision seeding can do the ditching, seeding, fertilizing, earth covering, and suppressing continuous operations, not only speeding up the sowing progress, shortening the sowing date, but also ensuring the sowing quality. The use of mechanical precision seeding, we must first do a good job in mechanical overhaul, in particular, row seeding, row fertilizer, trenching and earth-covering devices to meet the standards, to achieve the state of sowing operations; Second, do a good job of seed selection and germination test; third is to do a good job Seed dressing or seed coating. At the time of sowing, two rows of equidistant precision seeds were planted on the ridge by mechanical means, and the spacing between the two rows was 10 to 12 cm; the pods were used for equidistant hole sowing on the ridges, and the distance was 18 to 20 cm, and each hole was 3 to 4 Strains. It is necessary to appropriately increase the amount of sowing so as to ensure that there are sufficient number of seedlings per unit area, with 200,000 to 300,000 hectares in the central and southern regions and 280,000 to 350,000 in the northern hectare. We must also pay attention to selecting suitable varieties, fine soil preparation, strengthening field management, and doing a good job of prevention and control of pests and weeds.
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Heterocyclic Compounds
Heterocyclic Compounds,Cyclopropanecarboxylic Acid,Benzenedithiol Dihydrochloride
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