| 释义 |
underˈsow, v.
1. [under-1 10 a.] To sow too little seed on (a piece of ground).
1650W. Brough Sacr. Princ. (1659) 73 Let me prudently observe what each parcell of ground will best bear, that I may not over-cloy some, and undersow others.
2. [under-1 4 a.]
a. To sow (a later-growing crop) on land already seeded with another crop.
b. To sow land already seeded with (one crop) with a second, later-growing crop. Also absol.
1950N.Z. Jrnl. Agric. Aug. 145/1 In arable farming districts many spring-sown pastures are established with a cover crop, usually by undersowing the grass mixture on land which is carrying an autumn- or winter-sown cereal. 1951P. Oyler Feeding Ourselves vii. 65 If the wheat has not been under-sown with ryegrass and clover..the stubble will either be scarified..or it will be shallow ploughed. 1960Farmer & Stockbreeder 5 Jan. 102/3 Also include (or undersow) 15lb per acre Westerwolths rye⁓grass. 1963Times 10 June 7/2 High Mowthorpe..has grown barley for nine successive years, comparing the effects of giving additional nitrogen, undersowing with trefoil and ploughing in straw. 1981Daily Tel. 21 Sept. 10/8 Partridges..lost a major source of food when the practice of undersowing barley with grass was abandoned from the mid-1960s onwards.
So underˈsowing vbl. n., underˈsown ppl. a.
1943H. J. Massingham Men of Earth viii. 142 There was hardly a crop in the garden that was not undersown to another. 1960Farmer & Stockbreeder 12 Jan. 107/2 What is your opinion of sowing seeds along with corn when undersowing is practised? Ibid. 1 Mar. 106/2 (Advt.), Particularly recommended for undersown crops. 1963Times 10 June 7/1 Undersown cereals can be difficult to deal with in a wet year where the corn is slow to ripen. 1972Nature 21 Jan. 135/2 Field experiments..using various types of undersowing on the levels of pest insects and their enemies. |