It explored the effect of straw returned to field and deep fertilization in autumn on the growth and yield of dryland corn as well as water use efficiency and soil fertility.
Under the treatment of deep fertilization and irrigation at 20 cm,the photosynthetic rate of wheat after blooming was the highest,the stomatal conductance was low,and the intercellular CO_2 concentration was high,showing a considerable water-saving potential.
The field experiment of various kinds of straw returned to field and the deep fertilization in autumn has been conducted for five years in Shouyang dryland experimental area of Shanxi Province.
In this paper,structure and technical paramter of a SZL-2 deep fertilization and cultivating implement combine which was designed for adapting to climatic characteristics in semi-arid of Jilin province,and effect of experiments in the field were also reported
The precision seeding and side deep fertilizing technique of wheat isthe important reformation for decrease the cost and increase the profit inagriculture,and its effect is significant.
The design of new seedermeter and opener, and the study of whole planter including the mechanism of deep applying fertilizer were presented and analyzed in the paper.
Through applying new type wheat deep applying fertilizer seeder, realize wheat deep applying fertilizer seeding and different bed of separate seed, fertilizer box, resolve the harm problem of fertilizer to young shoot and seedling, achieve the goal for save money, increase profit and production. [
By studying to fertilize in deep and omnibearing lamination to soybean during 1993～1994, the results showed that applying fertilizer in the lamination under ridges according to the regulation of fertilizer needed and the root distribution of soybean should be advantageous to the growth and development of root and plant, increase dry matter accumulation, adjust the factors determining soybean yield and increase yield significantly.
The total increase of corn yield ranged from 6.2% to 8.0% in the first year but from 7.8% to 8.6% in the following year. These effects were even evident when breaking plough pan was combined with a deep application of fertilizer.
The results of experiment in two years showed that deep application of compound fertilizer could accelerate the development of individual plant,enhance the effective panicle rate of tillers,increase stress resistance,lower sterile and shriveled grain rate,and increase the grain yield by more than 5.1%.
improving the field condition is an important factor for the increase of rice yield.High yield paddy field should possess the following characteristics, thick and fertile soil horizon,desirable soil structure, good drainage and irrigation facilities, low ground-water level and abundant soil organic matter,
Basing upon the studies of Napplication throughout the world,that the efficiency of utilization of N being applied into soil is 30—70％ only,while 5—10 was leached,10—30 was volatilized,the rest 10—40％ was remainad in soil. These indicate that N utilization has great potential. The test was conducted on the Experiment Farm of Shanxi Agricultural Univresity through 1981 and 1982. The treatment of N (Ammonium sulph re, ammonium nitrate) including, of 4 treatments of depth of applicationl:top-dressing, 1—2 chun...
A high-yield comprehensive agrotechiques integrating with ridge-culture, deep-tillage, stratified fertilizer application etc. has been used on 4500 mu in State Farms. Improve soil condition for soybean root extending. Such practice can comparing with control, the roots in low layer of soil on high-yield field increased twofold, with more branches and gave rise 5-6 order roots, absorption power stronger, active absorption area increased by 57.5%, total amount of roots increased by 83.6%, and roots-top (T-P) ...
深施肥
deep fertilization
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