What is the positive effect of no-tillage method on restoring and maintaining fertility of black soil in Lishu County?

No-tillage method can reduce runoff, reduce evaporation, effectively increase soil water storage and fertilizer water, and become an effective means to improve crop yield on the premise of retaining surface coverage.

A document provided by Shanxi Agricultural Machinery Development Center shows that conservation tillage can reduce surface runoff by 50-60% and soil erosion by about 80%. Can increase soil water storage16-19%; Improve water use efficiency12-16%; Increase soil organic matter by 0.03-0.06%; Increase grain production13-16%; Reduce the activity cost by about 20%; Reduce sandstorms caused by strong winds by about 60%.

Extended data:

No-tillage measures include three types:

1, covering cultivation. Tillage before sowing, the farmers used include subsoiler, cultivator, disc harrow, flat harrow, stubble cleaner, etc. Herbicide or intertillage weeding.

2. Ridge farming. Except fertilization, the land is not from harvest to sowing. Sow the seeds on the seedbed of the ridge platform, and open the bed with a flat rake, a disc ditcher, a small plow or a ridge cleaner. Leave stubble on the surface between ridges, weed with drugs or intertillage, and ridging again during intertillage.

3. Don't plow. Except fertilization, the land is not from harvest to sowing. Sow the seeds on a narrow seedbed, and use a small plow, ridger, disc ditcher, internal shovel or cultivator to open the bed. Weeds are mainly controlled by drugs, and intertillage does not weed unless it is urgent.