The Study On High Yield And Efficient Cultural Technique Of Cumunum Cyminum L. In Hexi Corridor

Based on the situation of cumunum cyminum L. production and nantural ecological conditions in Hexi corridor of the Gansu province, the growth techniques study of high yield and efficient of cumunum cyminum L. was carried out, through planting date and planting density experiment, high yield and benefit patterns investigation and fertilization field experiment, the result show as follows:A. the optimum planting period of cumunum cyminum L. in irrigated area of Hexi corridor is from March 10 to 20, and the adaptable planting density is 15.0~22.5kg/ha. Both crop yield and economic benefit can be gained under the scheme. The highest yield and economic return can be obtained under the seeding date of March 10 and seeding density of 22.5kg/ha, the average yield of cumunum cyminum L. is 1437.8 kg/ha, ratio of economic production and investment is 1:4.45.B. The good cropping paterns of cumunum cyminum L. relay intercropping with corn is T3 and T4 treatment., i.e. the planting density of cumunum cyminum L. is 22.5kg/ha, the planting density of corn is 52500~60000 plants/ha, the row spacing is 20cmx(85~95cm), both cumunum cyminum L. and corn could get high yield and high benefit.C. The distributing area, acreage, economic return, field structural feature and technique system of 4 new cropping patterns of "cumunum cyminum L. intercropping sugar beet", "cumunum cyminum L. intercropping cotton","cumunum cyminum L. intercropping aniseed"and "cumunum cyminum L. intercropping sunflower" were investigated, the results supply references for the cropping patterns research and application.D. N and P cooperative fertilization of cumunum cyminum L. field can get high effect, the sequence of yield inceraes effect of different treatments is: NPK+organic fertilizer> NPK>NP>NK>CK(no fertilize), the yield incerase rate of the fertilization treatment is 22.84%, 20.67%,19.12% and 12.62% seperately. The sequence of economic income of the fertilization treatment is NP > NK > NPK > NPK 4- organic fertilizer, the efficiency of fertilizer investment is 22.57,18.32,13.88 ,4.88 RMBYuan /Yuan differently.