34results about How to "Increase soil temperature" patented technology

The invention discloses a plastic film mulching cultivation method suitable for autumn-planted peanuts in subtropical regions. The method is as follows: carrying out soil preparation as soon as possible after harvesting previous crops, combining the oil preparation with fertilization together, and adopting the one-time fertilization way; firstly mulching a film for covering the soil before seeding, and utilizing the high temperature in late summer or early autumn in the subtropical regions for killing partial pathogens, weeds and pests in the soil; adopting the technology of firstly punching and then seeding, and seeding peanut seeds in holes without covering the seeds in the plastic film for preventing the high temperature from baking the seeds; adopting the technology of sequentially covering the soil, the seeds and the film for preventing hot airflow in the film from escaping and burning seedlings; and simultaneously effectively reducing water content in the soil after heavy rain and being conductive to the germination of the peanut seeds. The method is simple, practical, easy to master and convenient to popularize, and can solve the problem that the plastic film mulching technology can not be applied in the autumn-planted peanuts in the subtropical regions, significantly improve the output of the autumn-planted peanuts in the subtropical regions and be particularly applicable to the cultivation of the autumn-planted peanuts in dry land and rain-fed fields in rain-fed areas of the subtropical regions.

The invention relates to a liquid fertilizing and water-retaining mulching film and a preparation method thereof and belongs to the technical field of agricultural production. The liquid mulching film comprises components in percentage by mass as follows: 1%-10% of a modified macromolecular composite polymer and 90%-99% of a fertilizing agent; the modified macromolecular composite polymer comprises components in parts by weight as follows: 35-45 parts of ultra-fine silica sol, 5-10 parts of zinc oxide, 40-100 parts of carboxymethylcellulose or hydroxypropyl methyl cellulose, 20-30 parts of N-isopropylacrylamide, 0.02-0.3 parts of a cross-linking agent and 0.4-1.2 parts of an initiator; the solid content of the ultra-fine silica sol is in a range of 10-30wt%, and particle sizes of silica in the ultra-fine silica sol are in a range of 1-100 nm. The prepared liquid mulching film can significantly increase the water-retention rate of soil and improve physical and chemical properties of the soil, can be completely degraded, is free of pollution and can substitute for plastic mulching films on a large scale.