吉林林业科技
吉林林業科技
길림임업과기
JILIN FORESTRY SCICNCE AND TECHNOLOGY
2014年
1期
29-31,44
,共4页
威尔伯%幼林抚育%除草效果
威爾伯%幼林撫育%除草效果
위이백%유림무육%제초효과
Velpar%young forest tending%weed control effect
以红松、红皮云杉、长白落叶松造林地为对象，利用化学制剂威尔伯进行幼林抚育试验，结果表明：450 ml· hm-2剂量除草效果最差，仅有12％，在生产上无应用价值；450 ml· hm-2剂量有一定的除草效果，但不明显，持效期也短；1125 ml· hm-2剂量无论除草效果还是除草速率都优于450 ml· hm-2和750 ml· hm-2。长白落叶松对威尔伯敏感，不能应用。化学除草抚育较人工抚育更能促进幼树生长，而且费用较低。
以紅鬆、紅皮雲杉、長白落葉鬆造林地為對象，利用化學製劑威爾伯進行幼林撫育試驗，結果錶明：450 ml· hm-2劑量除草效果最差，僅有12％，在生產上無應用價值；450 ml· hm-2劑量有一定的除草效果，但不明顯，持效期也短；1125 ml· hm-2劑量無論除草效果還是除草速率都優于450 ml· hm-2和750 ml· hm-2。長白落葉鬆對威爾伯敏感，不能應用。化學除草撫育較人工撫育更能促進幼樹生長，而且費用較低。
이홍송、홍피운삼、장백락협송조임지위대상，이용화학제제위이백진행유림무육시험，결과표명：450 ml· hm-2제량제초효과최차，부유12％，재생산상무응용개치；450 ml· hm-2제량유일정적제초효과，단불명현，지효기야단；1125 ml· hm-2제량무론제초효과환시제초속솔도우우450 ml· hm-2화750 ml· hm-2。장백락협송대위이백민감，불능응용。화학제초무육교인공무육경능촉진유수생장，이차비용교저。
Planting sites of Pinus koraiensis、Picea koraiensis Nakai、and Larix olgensis Henry were taken as objects to carry out tending experiment of young forest by using chemical agent -velpar , the results showed that under the dosage of 450 ml · hm-2 , the weed control effects were 12%, was no application value in the production; there is a certain weed control effect under the dosage of 450 ml· hm-2 ,but was not obvious with short lasting period .The weed control effect and rate under the dosage of 1 125 ml· hm-2 were better than 450 ml· hm-2 and 750 ml· hm-2 .Larix olgensis Henry was too sen-sitive to apply for velpar .Comparing with artificial tending , chemical weeding tending could promote the growth of young trees with lower cost .
