Method for cultivating healthy grafting seedlings of cucumbers

Abstract

The invention provides a method for cultivating healthy grafting seedlings of cucumbers. Turf, vermiculite and pearlite are mixed according to the volume ratio of 6:3:1 to prepare seedling cultivating substrates, teaselgourd in Africa is selected as stock, and the operation of raising seedlings by grafting in plug trays is performed; the stock is sown 5-7 days earlier than scions, and the stock is sown in 72-hole plug trays; the scions are sown in flat trays; 5-8 ml of a potassium phosphite aqueous solution with the concentration being 50 mg.kg-1 is applied to each tomato seedling from the time when the stock buds to the time when cotyledons are expanded; grafting is performed when the core of a first main leaf of the stock is exposed, the steam thickness is 2.5-3 mm, seed leaves of the scions become green, and the stem thickness is 1.5-2 mm; 8-10 ml of a prohexadione-calcium aqueous solution with the concentration being 20 mg.kg-1 is applied to each cucumber seedling when the length of a second main leaf is 1 cm after grafting; 10-12 ml of a Dufulin aqueous solution with the concentration being 100 mg.kg-1 is applied to each cucumber seedling when the length of a third main leaf is 1 cm after grafting. The grafting seedlings cultivated through the method have a remarkable preventing and treating effect on the root-knot nematode disease and virus diseases in the field.

Description

technical field [0001] The invention relates to a method for cultivating cucumber seedlings, in particular to a method for cultivating healthy grafted cucumber seedlings, which belongs to the technical field of vegetable seedling cultivation. Background technique [0002] Cucumber is the main variety of vegetable production in protected areas. Due to the continuous cropping cultivation for many years, the occurrence of root-knot nematode and virus disease has been increasing year by year. Root-knot nematode and virus disease have become devastating diseases of vegetable protected cultivation, often causing Severe production cuts or even no harvests. Simultaneously, traditional cucumber plug-in tray grafting seedling raising technology often easily causes grafted seedling leggy due to factors such as plug-in tray seedling-raising environment, causes grafted seedling quality to decline. [0003] At present, there is no specific agent for the control of difficult diseases such...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for cultivating healthy cucumber grafted seedlings for the above problems, which overcomes the fact that the prior art cannot effectively reduce root-knot nematodes and viral diseases, easily cause grafted seedlings to grow excessively, the quality of grafted seedlings declines, and the yield is low However, after adopting the method of the present invention, the occurrence of difficult diseases such as root-knot nematodes and viral diseases can be effectively prevented, the use of chemical pesticides can be reduced, and at the same time, it is beneficial to cultivate strong seedlings, promote good differentiation of flower buds, and achieve high and stable yields of cucumbers