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在青海春小麦田 ,鼬瓣花 4月下旬出苗 ,出苗高峰期在 5月中、下旬 ,各占出苗总数的37.7%、2 6 .2 % ,出苗最适深度 1～ 3cm ;在油菜田 ,鼬瓣花 4月下旬出苗 ,出苗高峰期在 5月上、中旬 ,各占出苗总数的 36 .1%、4 0 .6 % ,出苗最适深度 1～ 3cm。鼬瓣花是典型的抗 2 ,4 -D丁酯的杂草 ,1990～ 1994年连续 5年使用 2 ,4 -D丁酯 ,2 ,4 -D丁酯处理区其发生量较 5年前增加了 70 .3% ;春小麦田土壤处理使用 4 0 %麦草光防除鼬瓣花效果为 98.6 % ,茎叶处理使用 75 %巨星、7%麦阔净、麦草枯防除效果为 91.3%～ 10 0 % ;春油菜田使用 4 8%氟乐灵、油草净土 1- 2号土壤处理防除鼬瓣花效果为 84 .3%～ 99.7% ,茎叶处理使用油草净 (茎 1- 12号、茎 1- 9号 )、5 %菜王星WP防除效果为 80 %～ 10 0 % ;麦 -油 -麦轮作 3年后 ,化学药剂处理区效果均达 10 0 % ,空白对照 +人工除草区效果为 79.8% ,油 -麦 -油轮作 3年后 ,化学药剂处理区效果为 88.5 %～ 10 0 % ,空白对照 +人工除草区效果为 76 .2 %。
In Qinghai spring wheat field, Mirabilis petals emerged in late April, the peak of emergence was in mid-May and late ten days, each accounted for 37.7%, 26.2% of the total number of emergence, the optimum emergence depth was 1 ~ 3cm. In rape field, The flowering petals appeared in late April and peaked in May and mid-May, accounting for 36.1% and 40.6% of the total number of emergence respectively, and the optimum depth of emergence was 1 ~ 3 cm. Mustela flower is a typical anti-2, 4-D butyl ester of weeds, from 1990 to 1994 for 5 consecutive years using 2,4-D butyl ester, 2,4-D butyl ester treatment area occurred more than 5 years ago Increased by 70.3%. In spring wheat field, 40% of wheatgrass was treated with 40% of light and the efficacy was 98.6% for light-weed control, 75% of superstar was used for stem and leaf treatment, and 91.3% -100% for wheat straw and 7% %; Spring rape field with 48% triflural, oolong net soil 1-2 soil treatment to prevent the weasel petal effect of 84.3% to 99.7%, stems and leaves treated with oil grass net (stems 1-12, Stems 1-9). The control effect of 5% genipin WP was 80% -100%. After 3 years of wheat-oil-wheat rotation, the chemical treatment area reached 100%, and the blank control + artificial weeding area The effect was 79.8%. After 3 years of oil-wheat-oil tanking, the effect of chemical treatment zone was 88.5% ~ 100%, while that of blank control + artificial weeding zone was 76.2%.