41results about How to "Prevent secondary salinization" patented technology

The invention discloses a method for governing and improving soda saline and alkaline land through magnet tailing composite modifying agents. Tourmaline powder is accommodated in multiple-hole small cloth bags connected to a long rope and is evenly scattered onto a paddy field surface to make the paddy field surface make sufficient contact with tourmalines, water is completely drained after 4-5 days of field soaking, fresh water is supplemented, soaking is carried out 4-5 days, water is drained, salt leaching is carried out, and the modifying agents are applied, wherein the modifying agents are formed by mixing magnet tailing powder, fermented organic fertilizer and furfural residue; water filling, field harrowing, mud making and transplanting are carried out, and conventional rice cultivation technological management is carried out. The tourmalines are utilized to improve the salt leaching effect and quickly reducing salinity, and water drainage and salt leaching carried out before transplanting is carried out on the soda saline and alkaline land aim to quickly reduce salinity. Because saline-alkali soil is covered with the magnet tailing powder, physical properties of the soil can be changed, rain can more easily infiltrate downwards, surface soil salt can be leached, soil becomes rough in texture, and salt and alkali recovery is prevented. A drip line rises, water can not arrive at the ground directly easily, and salt is prevented from accumulating towards the earth surface. Poor physical characteristics like coldness, poor permeability and adhesion of alkali land are improved, less salt can rise, the soil is loosened, the saline and alkaline land is well improved, and secondary salinization is avoided.

The invention discloses a biological salt-degrading bacterial fertilizer consisting of the following components by weight proportion: 0.0013 to 0.0045 portions of gibberellin, 0.00002 to 0.0002 portions of cytokinins, 15 to 35 portions of bacillus megaterium, 50 to 80 portions of salt-degrading flora, 5 to 15 portions of amino acid and 2 to 10 portions of humic acid. The materials are evenly mixed and air dried. The bacterial fertilizer is formed by being extracted from marine microorganisms, rejuvenation, expanding propagation and being remixed with a plurality of trace elements. The bacterial fertilizer is scientific in formulation and very strong in activity, can be widely applied to salt lick improvement and a secondary salinization treatment, improves and optimizes soil environment and improves the deteriorated soil environment caused by the long-term use of chemical fertilizers and salt containing organic fertilizers (dungs). The bacterial fertilizer can facilitate the development of the roots of crops and can improve the ability of absorbing night soil. By applying the biological salt-degrading bacterial fertilizer, the fertilizer can facilitate the even seedling, uniform seedling and strong seedling at the earlier stage of crops, the strong nutrient transmission capacity at the middle stage and no premature senescence at the later stage.

The invention discloses an improvement method for highway medium separation area snow-melting agent salt damage soil. The improvement method comprises the steps that a medium separation area is uniformly divided into a plurality of same soil improvement units in the front-back direction of a highway; an improvement process of each soil improvement unit comprises the steps of soil discharging pond arrangement, leaky pipe and drain pipe burying, drainage arrangement and soil improvement; and soil improvement is conducted by sequentially laying a soil improvement layer, an organic substrate layer and a Moqi covering layer on the surface of the soil. According to the improvement method for the highway medium separation area snow-melting agent salt damage soil, the disoperation effect of a salt type snow-melting agent on the soil is converted through the soil improvement layer; soil renewing is facilitated through the organic substrate layer, the soil activity and fertility are increased, and plant layers are increased at the same time, so that the landscape effect of medium separation area landscapes is improved; by laying the Moqi covering layer, turning waste into wealth can be achieved, and the economic and ecological benefits as well as the environmental protection effect are achieved; salt discharging and separating are facilitated through leaky pipe laying, so that secondary salinization and alkalinization are prevented; and the improvement method is easy to construct, convenient to operate, capable of being used circularly and suitable for large-scale application in areas along the highway.

The invention relates to a method for constructing a yam irrigation mode in sandy land, including yam cultivation investigation, yam ditch irrigation section mode function design, and yam ditch irrigation section optimization. Among them, the work process of yam cultivation technology investigation is the determination of cultivation season, site selection and fertilization, fertilizer and water management, erection and pruning and harvesting; yam ditch irrigation section mode function design According to the geometric programming method, the objective function model is constructed to increase the income, and the construction suitable for sandy land is constructed. The objective function of the geometric planning of furrow irrigation of Chinese yam is solved according to the corresponding constraints. Experiments have proved that the invention has strong functionality, simple, effective, low-cost technology, and significant benefits of increasing income and reducing disasters, and can be widely used in sandy yam planting areas.

The invention relates to a head chute separated type ballastless track cutting bed structure for middle-strong salinized soil soil areas, in order to solve the technical problems of the high speed railway ballastless track design and meet the deformation control and durability requirements for high speed railway ballastless tracks. The head chute separated type ballastless track cutting bed structure comprises reverse L-shaped protecting layers, longitudinal seepage salt-removing blind gutters, base separating layers and drainage ditches, wherein the reverse L-shaped protecting layers are arranged on the slopes on the two sides of the bed excavation; the longitudinal seepage salt-removing blind gutters are arranged at the slope toes of the reverse L-shaped protecting layers on the two sides of the bed; the base separating layers are arranged above the bed bottom and the longitudinal seepage salt-removing blind gutters; a lower structural layer of the bed bottom, an upper structural layer of the bed bottom, a bed separating layer and a bed surface layer are successively paved above the base separating layers from bottom to top; the drainage ditches are arranged on the two sides of the upper structural layer of the bed bottom.

The embodiment of the present invention provides a method for high-yield cultivation of northern potatoes by drip irrigation under film, which relates to the field of potato cultivation, and can improve the water utilization rate and fertilizer utilization rate, and double the potato yield. The method includes: selecting soil and site preparation; installing a drip irrigation system; variety selection, seed potato treatment; sowing; irrigation and topdressing; fertilization management; and field management; The field water holding capacity is 65‑70%, the field water holding capacity is 75‑80% during the tuber formation period, the field water holding capacity is 75‑80% during the tuber expansion period, and the starch accumulation period is 60‑70% of the field water holding capacity; drip irrigation under mulch during the whole growth period of potatoes The irrigation quota is 80‑120m3 / 667m2; soluble fertilizers are used for topdressing, and pressure difference fertilization tanks are used; combined with irrigation, urea 15kg / 667m2 is topdressed.

The invention discloses streptomyces microflavus and application thereof in greenhouse soil remediation. By carrying out strain isolating, screening, breeding and domesticating on a greenhouse soil sample as well as through 16S rDNA sequencing and phylogenetic analysis, 70-85 parts of streptomyces microflavus XHS0032Xh CGMCC NO.9432 which is numbered as XHS0032Xh, 20-35 parts of micrococcus luteus, 25-40 parts of bacillus pasteurii and 15-30 parts of candida tropicalis are mixed, and a mixed strain liquid is fully adsorbed in a carrier and is mixed with accessories; a greenhouse soil remediation compound is prepared by virtue of a fermentation technology; and the soil remediation compound has an outstanding technical effect in greenhouse soil remediation.

The invention discloses a land consolidation method capable of increasing effective cultivated land area. The method comprises the steps of firstly, dividing field between two branch ditches and two lateral draining ditches, dividing field blocks in the field, and leveling land in the field blocks; secondly, respectively building hardened field ditches in boundary positions of all the field blocks, ensuring that the head ends of the field ditches are connected with lateral canals, the tail ends are connected with the lateral draining ditches, the canal ratio is reduced to 1000:1 to 300:1, and the upper opening of each field ditch is lower than field surfaces on two sides, and additionally arranging a controlling gate at the junction of each the field ditch and each lateral draining ditch; thirdly, arranging a plurality of conical large open wells on identical sides of the field ditches at intervals, and ensuring that the large open wells beside adjacent field ditches are distributed in a staggered way; and fourthly, arranging a diving pump in each large open well, connecting the water outlet with the large open well, and arranging an automatic control switch on each diving pump. The method can rapidly remove excess surface water, ensures that the excess surface water rapidly infiltrates into earth mass and leaches saline matter in the earth mass, reduces the direct runoff rate, surface layer nutrient loss and water logging damage, can increase the effective cultivated land area, and facilitates irrigation.