Through the simulation and sieving by computer, a normal cultivation of 100 kilograms per mu and four best sowing -time plans have been worked oul, and the results of feedback information test and the large-scale demonstration has proved that the expected goals have been reached, the rate of output increase being 9.37-26.89%.
The results showed that suitable sowing-time was beneficial to the improvement of wheat quality, early and late sowing all lowered the wheat quality and the degree of wheat quality deterioration was various in different wheat lines due to their adaptability to the sowing time.
The experiments on the different seedingtime of lacquertree is in the mountainous area about altitude 500～1200m in Guizhou from 1987～1988. The result of experiment shows that sowing in the middle ten days of February is the best sowing-time.
Two plot trials in the control of peanut white grubs with 35% phoxim CS were conducted in Suzhou and Guzhen county and More than 43 hectares of demonstration trials were conducted in Feixi county from May to September in 2004. The results showed that the control effect of 35% phoxim CS was double effect of phoxim EC, when they were used in their mixtures with sand to cover peanut seeds at sowing-time. 3?
The experiments make it clear that cotton's suitabl sowing-time is about on April 5th. The rea- sonable planting-density:wide-narrow row:45000～75000truns/hm~2
Abstract: We have several experiments in different sowing - time about the newly - imported rice cultivars in Xichang . By analyzing the body of rice seeding, We think March, 15th sowing the kinds such as Yang Xin You - 1, Nei Xiang You - 3, Jin You - 188 and Fu You -4 and so on is the best time; and the very time to sow Nei Xiamg You - 13 is on March, 29th.
Occurrence of Ustilago tritici on the improved varieties of spring wheat is a serions problem in Manchuria.The use of modified hot-water treatment in the early spring is more or less limited on account of the enormous quantity of seeds and the short period of sowing time.For this purpose,the hot-water treatment of the seeds in the fall and to store over the winter after being perfectly dried is suggested. Experments are held in the laboratory and greenhouse,as well as in the field. The treated and untreated...
Occurrence of Ustilago tritici on the improved varieties of spring wheat is a serions problem in Manchuria.The use of modified hot-water treatment in the early spring is more or less limited on account of the enormous quantity of seeds and the short period of sowing time.For this purpose,the hot-water treatment of the seeds in the fall and to store over the winter after being perfectly dried is suggested. Experments are held in the laboratory and greenhouse,as well as in the field. The treated and untreated seeds are stored under various environmental conditions at different periods of longevity.A final measurement between treated and un- treated seeds is made. The results obtained from 1953 to 1955 indicate as follows:Generally,under normal dry conditions of more than five months' storage,there is no difference between treated and untreated seeds in the percentages of germination,rates of emergence,heights and dry weights of seedlings,and yields.However,under conditions of high relative humidity,the treated seeds would be deteriorated in the same manner as the untreated ones.Although the results point out that the treated seeds tend to delay the emergence of seedlings from soil,yet,it does not influence the later growth of the wheat plants.Varietal difference between the treatments in the experiments is insignificant. The tentative results lead to a conclusion that the seeds of spring wheat varieties to be treated in the fall and stored in the winter may have a practi- cal value in Manchuria.
In this paper the possibility and requirements for growing olive in China were discussed; seed characters including the germination test, the availability of embryo in each seed, the water permiability of seed coat, the chemical and mechanical treatments of seed for hasten-ning germination before sowing, the test for interspacing sowing time, as well as the cutting and grafting experiments have been analyzed and conducted. It is suggested that autumn sowing with seeds mechanically decapited (tip-brokened) and...
In this paper the possibility and requirements for growing olive in China were discussed; seed characters including the germination test, the availability of embryo in each seed, the water permiability of seed coat, the chemical and mechanical treatments of seed for hasten-ning germination before sowing, the test for interspacing sowing time, as well as the cutting and grafting experiments have been analyzed and conducted. It is suggested that autumn sowing with seeds mechanically decapited (tip-brokened) and soaked in 0.5% thiourea for 24 hrs. accelerates the germination. Rooting with young seedling cuttings also produce satis-factory results.
It has been found in this experiment that the wheat in Guangtongprovince has the following characteristics:short tillering period,loweffective-tillering rate,early appearance of the tillering stage with alongpersisting peak,early differentiation of the spike and a short differentia-ting time,late concentrated degeneration of the floscule and a long grainmilking stage.Under the ecological conditions in Guangtong provincc,in accordancewith the above-mentioned characteristics of wheat,the authors have putforward...
It has been found in this experiment that the wheat in Guangtongprovince has the following characteristics:short tillering period,loweffective-tillering rate,early appearance of the tillering stage with alongpersisting peak,early differentiation of the spike and a short differentia-ting time,late concentrated degeneration of the floscule and a long grainmilking stage.Under the ecological conditions in Guangtong provincc,in accordancewith the above-mentioned characteristics of wheat,the authors have putforward some suggestions to avoid the harmful factors and make use ofthe advantages.In order to ensure a high,stable yield it is suggested toput emphasis on:cultivars to be chosen,the ways to increase production,sowing time,the cultivation of stout seedlings,and the prevention fromthe bad effects of the rainy days on grain milking in the late stage.
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