昆明市香石竹大田杂草发生规律及化学防治研究

昆明气候温和，花贲周年种植，花大田内杂草种类多，生长最大。不同地区，不同地势的大田草种不同。通过定点观察，多以一种生杂草为主，生育期内发生两个杂草高峰。

Study on the Occurrence of Weed and Chemical Control in Dianthus caryophyllus Field at Kunming

Kunming enjoys a mild weather in four seasons; the difference is not obvious. Under such weather conditions, flower can be planted round years. In the flower field, the species of weed are fairly ample. There are different species of weeds at different field topography, annual weeds have a dominant population in flower field. There is two-occurrence peak of digerati abscendens when setting plant Devinol,acetochlor,metolachlor and pendimthalin can be applied to control weeds in fields of Dianthus Caryophyllus. After spraying herbicides 20d and 40d,they had 96%of controlling grass weeds effect. After 60d, it's only penoimethalin cant not over 90%. After sprayed 20d and 40d, penimethalin has the effect of control broad-leafed weeds over 90%,acetochlor has 80%, there are not to 50% for else. Soil moisture was an important influencing factor for these herbicides. Sprayed before setting plant, there is security for Dianthus caryophyllus.