Potato virus-free protospecies big-ridge single-row big-plant-spacing pesticide and fertilizer integrated high-yield breeding method

Abstract

The invention relates to a potato virus-free protospecies big-ridge single-row big-plant-spacing pesticide and fertilizer integrated high-yield breeding method and belongs to the technical field of potato virus-free minitubers. The technical scheme includes that the method includes the following process steps of 1, soil preparation; 2, seed selection; 3, film mulching, seed trapping and medicament seed mixing; 4, seeding; 5, fractional ridging and holing; 6, pesticide and fertilizer applying; 7, height control; 8, seedling killing and harvesting. Measures like big-ridge single-row big-plant-spacing film mulching, whole minituber shallow seeding and multi-time ridging are adopted to enable creeping potato stems to be densely distributed in a soil tillage layer and enable the top ends of the creeping potato steams to expand to form hole-shaped multilayer tuberization, disease-preventing medicament and foliar fertilizer are sprayed at the same time, and equivalent per unit yield of 667m2 reaches 452.3-4150.2kg; 800-1000 grains of virus-free minitubers can be saved, protospecies tubers are uniform in size, overweight big tubers do not exist, bud eyes are uniform in distribution, and tuber utilization rate during protospecies bud cutting is high.

Description

technical field [0001] The invention relates to a method for high-yield breeding of potato virus-free original seeds in a single row with large distance between plants and medicine and fertilizer, and belongs to the technical field of potato virus-free microtubers. Background technique [0002] Potato is a dual-purpose crop of food and vegetables. During the planting process, virus infection causes species degeneration, which is an obstacle to the decline in potato yield. The use of virus-free mini-potato seed tubers to breed virus-free original seeds is an important link in the production of field potato commercial potatoes. At present, the commonly used method in the production of original seeds is to sow the whole potato with a grain weight of 5-10g. The bud-cut method is often used for sowing with a grain weight of 10-15g. For those covered with mulch (or not mulched), the sowing depth of the mulch is 10-15cm without removing the film until harvesting. The problem of th...

AI Technical Summary

Problems solved by technology

The problem of this production method is that the cut buds of micro-potatoes are easily infected with viruses, and the virus-free effect of the original seeds cannot be guaranteed. The plant density is high, the ventilation effect of the plants is poor, and the plants are susceptible to diseases. The amount of micro-potato seeds used is large (667m 2 4500 grains), deep sowing in early low temperature land is not conducive to seedling emergence, mulching until harvesting period, soil layer isolation occurs during soil cultivation, it is difficult to enter the root system when rainfall is low, high ground temperature during tuber formation period is not conducive to tuber formation