The results showed the narrow row spacing can remarkable raise wheat ear numbers and yield 結果表明,相同基本苗情況下,縮小行距放稀株距均能顯著提高2個小麥品種的成穗數,增產顯著。
For it is not solved about the synchronization of the amount of seeding transplant and velocity in application , when the velocity is changed , the amount of seeding transplant is not adjusted timely 當行走速度改變時,由于擺秧量沒有得到同步調整,故秧苗株距不能得到適時有效控制。
Because of the complekity of the sallce of theng field , at present the quality of seedng on the conservation tillape land is lower than tradihonal hllage land , distanee between seedlings being not whfonnly , occurring absent seeding and even whole absent rows of seedings 由于保護性耕作地面的復雜性,目前玉米免耕精播機播種質量仍遜于常規播種,株距不勻、漏播、甚至因堵塞整行漏播的情況時有發生。
The results show , that the yield of no . 2 is 26 % higher than no . 1 . the appropriate density and stage of transplanting were determined . the highest total yield was obtained at the spacing of 45cm x 30cm , and the highest yield of first harvest at 45cm x 10cm 結果表明,日本夏菊2號的鮮花總產量比日本夏菊l號高26 % ;確定了適宜的定植密度和定植期:定植行距45cm ,株距30cm時,鮮花總產量最高;定植行距45 。
Based on the analysis of the kinetic track of the scallion during planting , basic relationships ' among the characteristic parameters of the transplanter with two flexible metal disks , including the velocity of the transplanter , the rate of transplanting , the spacing between seedlings , the angle of releasing seedlings , the diameter and length of seedlings , have been set up in this paper , and then a mathematic model of optimum design for the transplanter with the final planting angle of seedlings ( y = 90 ) has been formulated and solved with good results . according to the optimum solutions , a new type of transplanter with two flexible metal disks has been developed and the field tests of the transplanter have been conducted 為了實現大蔥機械化移栽,作者分析了國內各種移栽機的結構特點,確定了以撓性圓盤式栽植器為研究對象,在分析撓性圓盤式栽植器的運動軌跡和特征參數的基礎上,完整地確立了撓性圓盤式移栽機的基本參數:栽植頻率、栽植株距、機組前進速度、輸送帶上秧槽的間距、撓性圓盤半徑、撓性圓盤的轉速、夾苗株數以及傳動比之間的相互關系,并建立了以蔥苗栽植傾角= 90為目標的優化設計數學模型,提出了撓性圓盤式大蔥移栽機的優化設計方法。
Has become one of cash crops of regional scale planting for many years in china . unfortunately , because scallion is planted with a small spacing between seedlings , all kinds of available transplanters made in domestic can not be used for transplanting scallion , so up to now scallion planting has to be planted by manual tools 大蔥在我國已成為區域規模種植的經濟作物之一,由于大蔥移栽的農藝要求特殊性,國產的各種移栽機都不適合大蔥這類小株距作物的移栽,大蔥移栽機在國內的研究與應用方面還是空白。