481results about How to "Good ventilation and light transmission" patented technology

The present invention discloses a form pruning method of fruit tree. Said method includes the following steps: (1), in first year, selecting and setting first layer of 46-6 main branches which are not overlapped for central trunk, making included angle between main branch and central trunk be greater than 90 deg.; (2), in second year, defining 3-5 layers of main branches over first layer of main branches, every layer has 1-3 mutually non-overlapped main branches, the upper layer of main branches and the lower layer of main branches are not overlapped mutually, making all the included angles between main branches and central trunk be greatly than 90 deg.; and (3), in third year-fifth year, pruning to make the tree height be controlled within 3 meters, setting 4-6 layers of 7-21 main branches, making every included angle between every main branch and central trunk be greater than 90 deg.

The present invention discloses a paddy field rail duck raising technology. Rice, insect, duckweed and duck constituting one biological chain are made to control each other; the time and the space for the four kinds of organisms to constitute the complex colony are controlled based on the rice growth rule and the symbiotic biological environment for rice and duck is improved to realize the pollution-less rice plantation and duck raising. By stimulating natural biological system, the duck raising in paddy field can control the harmful disease, pest and weed, reduce pesticide amount, produce green food material and increase rice field output value.

The invention discloses a kiwi fruit tree form with a single trunk and double main tendrils and a shaping trimming method of the kiwi fruit tree from. The trunk of the tree form is perpendicular to the ground, the height of the trunk ranges from 1.8m to 2.1m, the two main tendrils reversely horizontally extend by 2m to 3m along a row direction after being annularly crossed at a rack surface, 20 to 30 side tendrils are distributed on two sides of each of the double main tendrils like feathers, the pitch between each two side tendrils on the same side ranges from 30 cm to 40 cm, the side tendrils are perpendicular to the main tendrils to horizontal extend, and after the tree form is formed, allowance of full buds of a kiwi fruit tree garden per mu range from 10000 to 12000 after the kiwi fruit tree garden is trimmed in winters. The shaping trimming method of the kiwi fruit tree form is simple, after a tree is cultivated and formed, strong new side tendrils are reserved in summers to be used as fruit mother tendrils to cultivate in the next year, residual sprout tillers and new tendrils are removed, the fruit mother tendrils in the current year are reduced or removed when trimming inthe winter, and are replaced by the new fruit mother tendrils, branches and tendrils are bound in time, operation is easy, the quality of fruit is high, shortcomings that an existing kiwi tree form is messy, trimming is troublesome and the quality of fruit is poor are overcome, and accordingly the method is suitable for simplified trimming for a kiwi fruit tree garden by low labor intensity.

The invention discloses a two-branch one-trunk forming and planting method and a reshaping method for apple trees, which belong to the field of fruit tree cultivation and fruit tree ecology. The two-branch one-trunk forming method for the apple trees comprises the steps of cultivating each tree as high as 2.8m to 3.2m, and cultivating two main branches extending towards between lines on a middle trunk above the ground by 80cm to 100cm, thus forming an oblate conical crown. The two-branch one-trunk forming and planting method realizes close planting in wide lines, facilitates mechanical operation and labor-saving cultivation, reduces the labor cost, has high yield and good benefits compared with other tree forms with main branches in beginning ten years, and promotes the development of the dwarf apple trees.

The invention belongs to the field of rice cultivation, and particularly relates to a cultivation method suitable for no-tillage rice in a fixed compartment of an oil crop-medium rice field. The cultivation method comprises the following steps that: (1) rice seeds are coated by using dry-raised nurse, thick mud and dry fine soil serving as coating agents, wherein the components comprise 7.9 to 12.5 percent of dry-raised nurse, 25 to 26.3 percent of rice seeds, 12.5 to 13.2 percent of thick mud with 37 percent of water content and 50 to 52.6 percent of dry fine soil with 3 percent of water content in percentage by mass; the rice field is finished as required and the soil moisture is kept; and keeping the seedling age at 15 to 18 days; (2) the compartment width of the oil crop field is 1.2 meters, the width of the ditch is 0.3 meter, and the depth of the ditch is 0.25 meter; the rape seedlings are applied to the field; a ternary compound fertilizer of which pure nutrients comprise 15 percent of N, 15 percent of P2O5 and 15 percent of K2O is applied, and 30 kilograms of pure nitrogen is applied in each mu; 5.80 kilograms of zinc is applied in each mu; and 4.8 kilograms of boron fertilizer is applied in each mu, and the ditch is kept full of water; (3) rice seedlings with 50 to 100 grams of soil in each seedling in 15 to 18 days are directionally thrown according to a row space of 20 centimeters; and (4) the ditch is kept with water and the compartment surface has no water after throwing the seedlings till the heading stage, and dry and wet alternated cultivation is adopted from the grain filling stage to the maturation stage. Compared with the conventional method, the yield is averagely increased by 8.7 percent.

The invention discloses a planting method capable of improving the passion fruit yield and quality, and the method is characterized in that an adopted shed frame is a double-travelling flat shed frame which is in the shape of a double-row Chinese character 'men', the pile spacing of the shed frame is 3 meters, the pile height is 2.5 meters, a nylon net is arranged on a shed top so as to form a horizontal shed frame, and passion fruit trees are planted between the piles of the shed frame according to the planting space of (2-3)m*(2-3)m; and an additional fertilizer is applied during the seedling stage, growing stage and fruiting stage of the passion fruit, night soil, peanut bran and a phosphatic fertilizer are adopted in parts by weight according to the ratio of 100:(19-21):(28-32), are put in a manure pit to biodegrade for a month to be produced into manure of fermented night-soil mixed with water, and the manure of fermented night-soil mixed with water and the phosphatic fertilizer are sprayed to roots for 2-3 times. The shed frame which is in the shape of the Chinese character 'men' is adopted, uniformly stressed and not easily fell, is low in cost, and has good ventilation and photopermeability, less pest and disease damage are less, the self-making special fertilizer is adopted and sprayed to the roots during different growing stages of the plant, the plant grows strongly, the fruit is big and full, has bright colors and contains high sugar content, and the acre yield is improved by 20-50%.

A high-yield honeysuckle cultivation method includes soil preparation, transplanting, topdressing, intertillage weeding, shaping, trimming, topping, daily management and the like, and has the advantages that shaping, trimming and topping are beneficial to ventilation, light transmittance and nutrition absorption, nutrient components of a honeysuckle plant are delivered to branches and leaves for growing flowers as collectively as possible so that yield and quality of honeysuckle flowers are improved, more flowers can blossom and are easy to harvest, the yield of flowers on three-year-old single honeysuckle plants can reach 5.7kg, and the yield of flowers on four-year-old single honeysuckle plants can reach 13.2kg.

The invention provides a method of the cultivation frame type management in a melon grafting and seedling shed. Melons do not resist soil-borne diseases and cannot be planted in a continuous cropping manner. The method comprises the following steps: taking white-seed pumpkins as rootstocks; taking melon breeds as spikes for seedling and grafting by means of peg grafting or nurse grafting or cleft grafting; performing accelerating germination and seeding, wherein graft seedlings are seeded 8 to 10 days earlier than actually grown seedlings, meanwhile, the seeding in prepared nutrition soil is carried out at different stages, and melon seedlings are grafted on the rootstocks of the white-seed pumpkins; planting not less than three melon seedlings per square meter based on the row spacing of 60cm x 58cm or 65cm x 54cm or 70cm x 50cm; punching; fertilizing; watering; inserting the seedlings; trimming branches and adjusting vines 5-20 days after the planting, removing all 8-10 sub-vines above 3-4 remained melon setting vines, leaving only one main vine and suspending the man vine through a nylon cord; performing pollination, fruit thinning as well as prevention and treatment of plant diseases and insect pests; and harvesting melons after the melons are ripe. The method is used for planting the melons.

The invention discloses a planting method of yellow peach trees. The yellow peach trees are planted through the steps of orchard building, seedling cultivation, field planting, management of nutrient and water, pruning, management of flowers and fruits and pest control. The planting method of the yellow peach trees mainly resolves the problem of the planting technology of the yellow peach trees, increases the yield compared with a common planting method, and is particularly obvious in benefit.

The present invention relates to a culture method of loquat, in particular. It is applicable to potted loquat. Said culture method includes the following four stages: seedling cultivating stage, grafting stage, potting stage and bloom-promoting fruit-keeping stage. Said invention also provides the concrete measures and steps of every stage.

The invention relates to a high-yield corn planting method which is simple, easy to popularize and capable of increasing yield and income. According to the high-yield corn planting method, corn is sown in 2-3 ridges, wherein one ridge is spared; one row of the corn is sown in each ridge, wherein the row spacing ranges from 13 centimeters to 15 centimeters. According to the high-yield corn planting method, the corn yield per unit area is increased through a technological innovation to exceed the yield per unit area of ridge culture corn in the world by 20-30%; since super-density-tolerance corn hybrid seeds are used, the plant type is compact, leaves charge upward, stems are tough, and roots are flourishing; corn plants are about 230-250cm high and are planted densely and reasonably; the two ridges are used for sowing, one of the ridges is spared of sowing, and the spared ridge enhances ventilation, photopermeability and photosynthesis; the marginal advantages are given full play to; colony heterosis is given play to, so that the corn yield is increased.

The invention discloses a multi-main-branch open center tree shape of a pear tree, and belongs to the field of pruning of fruit trees. The trunk height of the tree shape is 0.7 to 0.9 meter, the central trunk height is 1.7 to 1.9 meters, 7 to 9 main branches are uniformly grown on the central trunk, and medium and small branch groups are directly grown on the main branches; the angle between each main branch and the central trunk is 70 to 80 degrees; and the thickness of a leaf curtain is 1.8 to 2.3 meters, and the height of the tree is 2.2 to 2.7 meters. The intervals of the medium branch groups on the main branches are 50 to 70 centimeters, and the intervals of the small branch groups are 10 to 20 centimeters. The tree shape has the advantages of simplicity and convenience in pruning, quickness in formation, earliness in fruiting, convenience in management, good ventilation and light transmission conditions and the like.

The invention relates to a reshaping and cultivating method for a pear tree with a single trunk and two main branches. The reshaping and cultivating method specifically comprises the following steps: planting a plantlet at a 1.5m-1.7m position of the height of the trunk; selecting and remaining two strong branches or strong buds which are cultivated into two main branches reversely growing along the rows at a basal angle of 45 degrees; fixing the main braches on a horizontal shed frame when the main branches reach racking points, and inducing the extended branches of the main branches to an inducing rod which forms a 45-degree angle with the shed frame, wherein extended fruiting branch groups which are in parallel arranged and vertically extend into the rows are provided on the main branches; and gently and slowly pushing, binding and fixing the two main branches to the flat shed frame surface in autumn of the next year. The reshaping and cultivating method disclosed by the invention is quick in crown forming speed, capable of completing the crown structure cultivation 3 years after the planting to begin to enter into an initial fruiting period which is increased year by year, and high in fruit quality uniformity. Meanwhile, the pruned crown does not contain secondary branches, and therefore, the reshaping and cultivating method has the advantages of being simple to prune, convenient to manage, good in ventilation and light transmission condition and the like.

The invention discloses an intercropping cultivation method of corn and rice beans, and relates to a cultivation method of the corn and the rice beans. The invention aims to solve the problems that accumulated temperature of a high latitude area in northeast is insufficient, the growth period is short, the yield and plant benefit are low, and the farming enthusiasm of peasant is poor under an existing planting pattern. The intercropping cultivation method comprises the steps of 1, plowing in autumn, harrowing and careful soil preparation; 2, selection of improved varieties; 3, seed treatment; 4, timely sowing and reasonable close planting; 5, field layout of intercropping cultivation method of the corn and the rice beans; 6, scientific field management; 7, timely harvest. According to the intercropping cultivation method disclosed by the invention, 2000 to 3000kg of clean production rice beans per hectare is increased under the situation that the yield of the corn is not reduced, the yield of crops and the benefits in a unit area are significantly improved, and the advantages of increasing production and increasing efficiency are obvious. The intercropping cultivation method of the corn and the rice beans is applied to the field of crop planting.

The invention discloses a leaf-picking-free silkworm table and a silkworm rearing method. The leaf-picking-free silkworm table is characterized by comprising a silkworm table box, a silkworm table cover, a ceiling and a mulberry branch flexible sealing element, wherein peripheries of the silkworm table box and the silkworm table cover are sealed by a fine nylon net; mulberry branches hooked in the silkworm table are sealed by a flexible material; a mulberry branch hooking frame with hooks and a silkworm rearing bed surface are arranged at the upper part of the silkworm table box and connected by using a lifting device; the mulberry branch hooking frame is placed at the inner side of the upper-part box of the side wall of the silkworm table box; and the silkworm rearing bed surface is capable of downwards moving and driving the mulberry branch hooking frame to vibrate up and down when being dropped in place. The rearing method comprises the steps of putting the leaf picking-free silkworm table in a line of a mulberry field, putting silkworms on silkworm rearing bed surface, bending and hooking the mulberry branches on the surface of the silkworm table box, closing the silkworm table cover and the ceiling, grouping the silkworms step by step according to the quantity and assigning to other silkworm tables to rear after half mulberry leaves are eaten by the silkworms. The leaf picking-free silkworm table and the silkworm rearing method have the advantages that the occurrence of silkworm diseases is effectively controlled; the damage of pebrine disease to silkworm egg production is decreased; the silkworm cocoon quality is significantly improved; the work efficiency of silkworm rearing can be greatly increased at the same time; and requirements of large-scale silkworm rearing are satisfied.

The invention discloses a high-yield shape pruning method of green prickleyash. The high-yield shape pruning method comprises the following steps of: for earsh, pinching and remaining the trunk, leaving robust buds on the trunk; and pinching again, remaining main branches and culturing side branches on the main branches, pinching so that side branches can grow up and robust bearing branches are evenly distributed on each secondary main branch; for fruiting tree, after harvest of green prickleyash, thinning out redundant boughs, and carefully pruning branches in the crown so that the branch groups are evenly distributed; short cutting the bearing branches to the range of 3-6 cm and cutting off excessively fruiting and aging bearing branches; remaining robust buds on each branch and removing redundant buds; and removing the side branches at the base part of the trunk; and for old tree, removing old branches and breeding new branches, and prolonging the life of the tree body and the fruiting life of the tree. The high-yield shape pruning method is characterized in that shape pruning is performed at earsh, fruiting and old stages of green prickleyash, respectively, so that the tree groups are appropriate in density, the branches are even in distribution, and the crown is good in ventilation and light transmittance effects; besides, there are few plant diseases and insect pests; the yield is high; the economic service life of the green prickleyash tree is long; and fruiting can be brought forward; therefore, good quality, high yield, stable production, and low consumption are realized.

The invention relates to a reshaping and cultivating method for a peach tree with a single trunk and two main branches. The reshaping and cultivating method specifically comprises the following steps: planting a plantlet at a 1.4m-1.6m position of the height of the trunk; selecting and remaining two strong branches or strong buds which are cultivated into two main branches reversely growing along the rows at a basal angle of 30 degrees; fixing the main braches on a horizontal shed frame when the main branches reach racking points, and inducing the extended branches of the main branches to an inducing rod which forms an 30-degree angle with the shed frame, wherein extended fruiting branch groups which are in parallel arranged and vertically extended into the rows are provided on the main branches; and gently and slowly pushing, binding and fixing the two main branches to the flat shed frame surface in autumn of the next year. The reshaping and cultivating method disclosed by the invention can be used for controlling the dryness advantages of the tree body, is quick in crown forming speed and capable of generally completing the crown structure cultivation 2 years after the planting to begin to enter into an initial fruiting period.

The invention relates to a pruning method of an apricot tree and a peach tree, comprising two parts of pruning in a dormancy stage and pruning in a growth stage. The pruning method in the dormancy stage comprises the steps of: slowly releasing short fruit spurs, breaking short conical spurs, retracting branches connecting to other flowers and blocking fruiting branches; the pruning method in the growth stage comprises the steps of: top pruning, thinning out of branches, topping and branch puling. The pruning method of the apricot tree and the peach tree can balance the tree vigour of the apricot tree used for peaches, apricots and kernels, improve ventilation and transmission of light, improve the proportion of complete flowers, increase the fruit yield, improve the fruit quality, and is an effective measure for having high yield and good quality and increasing yield and efficiency of the apricot tree used for peaches, apricots and kernels.

The invention discloses a method for storing moisture and preventing drought in a dry farming spring corn area. According to the method, after autumn crops are harvested, fertilizer applying, deep tillage, rake grinding and applying of chemical herbicide are performed in the late autumn and early winter according to the requirements for sowing plastic-film corn in spring of the next year, a plastic film is timely covered, hole sowing is directly performed on the film during sowing in spring of the next year, and harvest is performed in autumn. The method has the benefits as follows: by means of the provided method for storing moisture and preventing drought in the dry farming spring corn area, the water and moisture storing capacity can be enhanced, the soil moisture environment is improved, sowing in the optimum period and full stand of corn are guaranteed, the stress resistance of corn is enhanced, and the corn yield and the water use efficiency are improved. With the application of the method, the capacity of dry farming spring corn in the north of China in adapting to drying and warming of climate is improved, and the method has a very important significance in stable increase production and high yield of the corn in the dry land.

The invention relates to a multifunctional rearing instrument for silkworm, which pertains to the technical field of silkworm breeding and relates to an improvement of the rearing instrument. The rearing instrument for silkworm of the invention is used for overcoming the shortcomings of simple function and redundant patterns of the existing rearing instrument for silkworm, the various of instruments that are required for silkworm rearing such as plaques, racks, nettings, cocooning frames and supports of cocooning frame have the shortcomings that occupy large area, silkworm rearing, frame mounting and cocoon harvesting waste labor and time. The rearing instrument of the invention is a layer-foldable tray (1) assembled by frame-structured components, an upright post (2), a silkworm netting (3) or a cocooning frame, etc., which are arranged in the tray (1) to be made into a multifunctional rearing instrument for silkworm that integrates functions of cocooning frame, a plaque, a netting, a rack and a support of cocooning frame and can get rid of sands automatically, mount cocooning frame automatically and harvest cocoon quickly. All parts of the structure of the product, except the silkworm netting (3), can either be made into separate components for assembly or be integrally manufactured.

The invention relates to a planting method for crops, in particular to a wide-row flat planting protective tillage planting method for maizes. The planting method comprises the following seven steps of: performing land preparation, sowing, rolling after sowing, weeding by pesticides, subsoiling mechanically and performing side deep fertilizing, preventing and controlling diseases and insect pestsand harvesting mechanically. In the planting method, the conventional 60-centimeter uniform ridge planting mode is changed into a flat planting mode of 80-centimeter row pitch and 20-centimeter row spacing, and ventilating and light-transmitting space of the crops is increased; the conventional shallow intertillage and shallow fertilization mode is changed into a mechanical deep scarification anddeep topdressing mode, namely the conventional three-shovel three-time intertillage management and shallow fertilization operation is changed into one-time deep scarification and deep topdressing operation, so operation links are reduced, and the production cost is reduced; the conventional sowing mode is changed into a zero-tillage sowing mode, so the evaporation of soil moisture is reduced, andthe capacity of drought resistance and soil moisture conservation is improved; the conventional mode that harvested low stubbles are crushed to return to a field into a mode that mechanically-harvested high stubbles are rotten naturally to return to the field; and before sowing, seeds are processed by using a plasma seed processing technology to improve the germination percentage of the seeds.

The invention provides a method for controlling the growth of tomatoes by establishing a sunlight greenhouse long-season cultivated tomato plant leaf number model. Due to the technical scheme, the method comprises the following steps of: fixing samples; acquiring data; establishing a tomato leaf formation simulation model; and controlling growth management according to the simulation model. The method has the advantages of determining a corresponding relationship between the senescence of tomato leaves and a greenhouse environment and optimizing the regulation and control on the greenhouse environment such as temperature and humidity by using environmental equipment so as to enable the tomatoes in the sunlight greenhouse to grow and develop in a proper environment and realize high-yield and high-quality cultivation.

The invention discloses a grape cultivation method and a special rack for the cultivation method. The cultivation method is characterized in that grape branches are cultivated to an M-shaped growth trend. The special rack for the grape cultivation method comprises an upright; a first pulling rope for binding a main vine is arranged at a part, 1.4-1.6m from the ground, of the upright; second pulling ropes for binding new shoots sprouting from the main vine are arranged on the two sides of the first pulling rope on the upright respectively; a third pulling rope for breaking a side shoot and allowing the branches to grow in a falling manner is arranged on one side of each second pulling rope on the upright; a distance between each second pulling rope and the ground is greater than that between the first pulling rope and the ground; and a distance between each third pulling rope and the ground is not less than that between each second pulling rope and the ground. According to the grape cultivation method and the special rack for the cultivation method, after the new shoots grow horizontally and the branches are broken, front ends grow in a falling manner, so that apical dominance of grapes is inhibited, and the quality of the grapes is improved; light rays directly illuminate leaves, and the branches and the shoots are not crossed mutually, so that a photosynthesis effect is improved; and bearing branches are fixed on the pulling ropes according to the distances, and fruit clusters are not abraded mutually, so that the production quality of the grapes is uniform.

The invention discloses an ornamental persimmon tree shaping and trimming method, and relates to the field of garden shaping and trimming. According to the invention, biennial seedlings are planted according to a spacing of 3-3.5m; after first-year trimming, branch germination between two main branches of a trunk is promoted, and the branches are raised into main branches, such that tree crown cultivation and enlargement are facilitated; after second-year trimming, a spindly tree shape is preliminarily formed; and forming-stage trimming is carried out, such that the spindly tree shape is stabilized, and persimmon tree growth is recovered. The ornamental persimmon tree provided by the invention has a significant main trunk. The main branches are thick and have a spindly shape, such that crown span, tree size and trunk height can be easily controlled according to growth space. The branches are uniformly distributed. The upper branches are denser than the lower branches, the inner branches are denser than the outer branches, and the growth conditions of the branches are moderately robust. The persimmon tree has a good layered structure, and certain spacing is maintained among the layers. The persimmon trees are well ventilated and lighted, such that healthy growth of the plants are facilitated, and pest and disease damages are reduced. The trimming method is simple to operate, and is easy to command. When the method is applied in gardening, the ornamental effect of persimmon trees can be prominent.

The invention relates to a pot-planting method for wolfberry, in particular to a pot-planting method for Ningxia wolfberry. The pot-planting method comprises the following steps: selecting a variety; selecting a seedling; preparing a pot-planting medium; planting the seedling; performing cultivation and management; training and pruning; preventing and controlling plant diseases and insect pests; selling in a market and the like; the pot-planting method further comprises the specific management methods of implementing fertilizer and water management measures, implementing a growth period pruning measure for delaying the fruiting period of budding seats, implementing an overwintering measure of a pot tree and the like. Through a wolfberry pot-planting technology provided by the invention, the fruiting period of the budding seats can be brought forward or delayed; in a facility cultivation environment in a northwest region, pot-planting wolfberry can be planted in late October; the fruit matures in mid-to-late February; the pot-planting wolfberry appears on the market 4 months earlier than outdoor wolfberry; the pot-planting wolfberry is planted in the beginning of May and the fruit matures in the end of October; the marketing period of fresh wolfberry is delayed to December. Through the wolfberry pot-planting technology, a wolfberry tree shape for ornamental and production can be cultured.

The invention discloses a production method for wide-early-superior raw cotton in a cotton region in Northwest China. The method includes the following steps of 1, fission type elite seed production,wherein variety selection,10-ten-thousand-times fission type seed reproduction, and grain selection according to the grain size are conducted; 2, planting in rows with the equal width and conducting the following matching technologies: the variety selection and rational early sowing technology, the edge film widening and lighting technology, the sowing row no-covering-soil and film no-covering-soil technology, the appropriate seedling water dropping technology, the first water late-drop technology, the plant-height increasing and appropriate tip pruning delay technology, and the cotton-flowering and boll-forming fertilizer re-application technology; 3, an early-sowing and early-ripening matching technology; 4, superior raw cotton quality control technologies which includes the technology of uncovering mulching films in the optimum period and preventing pollution, the technology of spraying an appropriate amount of disleave agent and ripener in the appropriate period, the technology ofremoving field weeds and foreign matters and the technology of harvesting in the appropriate period. The method is feasible, operation is simple and convenient, conversion from short-dense-early 'getting cotton by temperature' to tapping of the potential of light, temperature and environment resources is achieved, and support is provided for high-yield, high-efficiency and high-quality cotton.

The invention relates to a method of interplanning a variety of crops in wheat land, belonging to the method of cultivating crops. The method of interplanning a variety of crops in wheat land comprises the following steps: A, sowing wheat seeds in the left part of the vacant land which is 0.5-1 meter wide, includes a dead furrow of 0.2-0.4 meter wide and is one part of the furrowed land of 2.0-2.5meter wide; B, sowing winter spinach seeds in the edges of the dead furrows; C, harvesting the winter spinach 170-180 days after the sowing of the winter spinach seeds; D, sowing one line of spring corns seeds in the winter spinach stubble land 185-200 days after the sowing of the wheat seeds; E, harvesting the wheat 50-60 days after the sowing of the spring corn seeds; F, sowing two rows of summer corn seeds between the lines of the spring corn 20-30 days after the harvesting of the wheat; G, harvesting the corn 38 days after the sowing of the spring corn; and H, harvesting the summer corn seeds 120-135 days after the harvesting of the spring corn. The invention takes advantage of the potential of the land to additionally harvest the crop which can be harvested after one season growth inthe land of one mu every year, thereby increasing the yield of the crop yield.

The invention discloses a trench sowing cultivation method of corns in a drought area. The trench sowing cultivation method comprises the following steps of carrying out soil preparation and film mulching and increasing moisture before winter, applying a fertilizer and seeding at the beginning of spring, managing at the seedling stage and the middle term, and managing and harvesting at the later stage. In comparison with the regular film mulching cultivation technology, the novel technology has different soil preparation and film mulching time, the annual film mulching cultivation in a furrow starts after harvesting preceding crop (in autumn), film mulching is timely carried out when soil preparation in rain, hole sowing is carried out along the furrow in spring, in comparison with sowing, the film mulching is ahead of time for 5-7 mouths, rainfall in a non-growing season can be stored for a crop growth season, so that the water desorption of soil in autumn and winter is effectively reduced, the temperature of the soil is improved, and soil nutrient is improved to be effective for creating good soil environment for growth of the corns; after many-year experiments, the result shows that in comparison with sowing in spring, by adopting the furrow film mulching cultivation, the moisture content of the soil, which is 0-20 cm under a film, is improved by 6.5-11.5%, the temperature of the soil, which is 5 cm under the film, is improved by 2.5-3.0 DEG C, the yield rate of the corns is improved by 12-25.8%, and the trench sowing cultivation method has better soil moisture conservation, warming and yield increase effects.

Disclosed is a simplified tree form reforming method suitable for a high-density jujube orchard. Since the grafting year of direct seeding and orchard building or the planting year, by about five-year continuous reforming, a jujube head form tree is formed with tree height of 2.5-3.5 meters, branch spreading of 1-1.5 meters, central trunk bending upwards, and 10-20 bending horizontally stretching fruiting branch groups directly inserted on the central trunk. The reforming method is suitable for wide-row dense-planting high-density jujube orchards (tree row space is 0.5-1.5m*3-4.5m), and simple in reforming. The reformed trees are slim and high, the branches are well-spaced without crossing, large row space can be guaranteed under high-density conditions, good ventilation and light permeability are achieved, high and stable yield and good quality are guaranteed, mechanical operation is facilitated, manpower for cutting is saved by more than 80%, and the problems that the high-density jujube orchard is prone to closing, complex to manage and the like are solved.