Alkaline land cotton pre-coating film seedling establishment method
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A technology for saline-alkali land and cotton, which is applied to the field of cotton pre-mulching and seedling formation in saline-alkali land, can solve the problems of limited application effect, difficult to popularize and apply, inconvenient use, etc. Effect
Inactive Publication Date: 2008-09-10
SHANDONG COTTON RES CENT
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Although these anti-salt agents are easy to prepare, the application effect under field conditions is very limited, and the seeds must be soaked, which is very inconvenient to use; the publication number is "A Saline-alkaline Soil Improver" with the publication number CN1317539A and "A Salt Improver" with the publication number CN1263142A Alkaline Soil Improver and Preparation Method thereof” discloses a saline soil improver applied to the soil, although it has a certain improvement effect, but the amount is large and the cost is high
Liu Shengtian and Han Changsheng disclosed a method of using plastic film sheds and plastic film coverings to cultivate cotton in saline-alkali soils in "Research on High-yield and High-quality Cultivation Techniques of Cotton Double-film Covering in Saline-Alkaline Lands" ("Journal of Cotton Science", 1997, No.5, 261-266) The double-film mulching cultivation method has a good effect of promoting seedling emergence and increasing production, but it is difficult to popularize and apply it in production because of the large amount of labor and large investment.
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example 1
[0025] Example one: the application of the present invention in the non-irrigated saline-alkali cotton field is as an example to describe in detail as follows:
[0026] Planted in Yangzhuang Township, Shouguang City, Shandong Province in 2006. The planting land contains 0.32% salt, 0.78% organic matter, and 36.1kg.mg of alkaline nitrogen -1 , available phosphorus 10.3kg.mg -1 , available potassium 172.2kg.mg -1 .
[0027] Leveling the land: Since the cotton fields with a salt content below 0.4% and a certain amount of rain and snow in winter accumulate, the land should be leveled immediately after thawing in early spring.
[0028] Concentrated fertilization: In the process of leveling the land on March 9, the pre-sowed cotton row was opened with a depth of 15cm, and 2000 kg of soil fertilizer, N, and P were added per mu. 2 o 5 、K 2 O is 40 kilograms of compound fertilizers of 15% and spreads in the deep ditch, covers the soil and rakes;
[0029] Pre-filming: The saline-...
example 2
[0033] Example two: the application of the present invention in the non-irrigated saline-alkali cotton field is as an example to describe in detail as follows:
[0034] Planted in Niuzhuang Township, Dongying District, Dongying City in 2006. The planting land contains 0.43% salt, 0.82% organic matter, and 35.7kg.mg of alkaline nitrogen -1 , available phosphorus 14.3kg.mg -1 , available potassium 102.6kg.mg -1 .
[0035] Land leveling: Due to the saline-alkali land with a salt content above 0.4%, fresh water was used to suppress salt on January 5, 2006, and 80m of fresh water was irrigated per mu 3 .
[0036] Concentrated fertilization: In the process of leveling the land on March 5, the pre-sowed cotton row was opened with a deep ditch of 15 cm, and 2000 kg of soil miscellaneous fertilizers, N, and P were added per mu. 2 o 5 、K 2 Sprinkle 60 kilograms of compound fertilizers with O all about 15% into the deep ditch, and cover the soil with rakes;
[0037] Pre-filming: Th...
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Abstract
The invention discloses a seedling formation method in alkaline lands by pre-coating film on cotton, which aims at increasing the seedling formation rate of the cotton in alkaline lands and realizing seedlings full and strong. The method of the invention is characterized in that: cotton fields having the salt content of below 0.4% and has certain accumulative rain and snow in winter are thawed in early spring, then ditches are opened in the rows of the pre-sowed cotton, and 2 tons of miscellaneous manure and 40 to 60kg of compound fertilizer which contains about 15 percent of N, about 15 percent of P2O5 and about 15 percent of K2O are fertilized, and then mulching film is used for covering the ditches immediately after the ditches are covered with soil and raked; as for an alkaline land with salt content of more than 0.4 percent, 80m<3> of fresh water is irrigated for each mu (mu: a Chinese unit of area, 1 / 15 of a hectare) at the end of winter to restrain salt content, ditches are opened and then miscellaneous manure and N-P-K compound fertilizer are fertilized in the early of middle of March, and film is covered after the land is prepared. The cotton fields which are leveled, fertilized and pre-coated with film are steadily passes earth temperature of 15 DEG C at the position of 5cm below the film, then bunch planting the ditinted and coated cotton seeds according to preset row spacing and plant spacing. The cottons are thinned out after the young seedling grow tidily, and final singling is carried out after two true leaves come out. The method of the invention achieves the functions of increasing temperature, water preserving and controlling salt by pre-coating the mulching film, promotes the seedling emergency and formation of cottons in alkaline land sand realizes synergetic salt control effect by concentrated fertilization under the film, thereby having significant yield increasing effect.
Description
technical field [0001] The invention provides a method for pre-covering plastic film in early spring in saline-alkali land to promote cotton seedling emergence and realize full and strong seedlings, and is suitable for cotton planted in inland and coastal saline-alkali land. Background technique [0002] my country's main cotton-producing areas are also important grain-producing areas, and there has always been a conflict between grain and cotton. As my country's food security issues become increasingly prominent, it is unrealistic to expand cotton planting areas in major grain and cotton producing areas. Relying on the characteristics of strong salt tolerance of cotton, it is a realistic and feasible way to fully tap the potential of cotton planting in saline-alkali land in my country. my country's saline-alkali land resources are very rich, and there are saline-alkali land resources of various sizes in the major cotton-producing areas. It is of great significance for the...
Claims
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