January 1976, Volume 18 Issue 1

 

          Research Articles
Studies on the Nutritional Diagnosis of Wheat
Author: Department of Soil and Agricultural Chemistry, North China Agricultural University
Journal of Integrative Plant Biology 1976 18(1)
      
    The auther took 45 mu of high yield fields as the experimental base at Zhang Zhuag Production Brigade of Honan Tan Commune Qu Zhou County in Hopeh. Comparisons were made among different conditions of seedlings in various plots of fields. By chemical analysis and biological observation, the measures and ways for high yield under different levels of production on saline soils were investigated. Symptoms of fertilizer deficiency or luxuriant growth and nutrition index were diagnosed, they were used to determine the structure and the treatment of water and fertilizer of high yield wheat in orde to obtain high yield in wheat production.
Abstract (Browse 1914)  |  Full Text PDF       
Analysis of Several Technical Problems on High Yield, Stable Yield and Low Cost of Wheat Production
Author: Research Group on High, Stable and Low of Wheat, Hy Chang College of Agriculture, Honan
Journal of Integrative Plant Biology 1976 18(1)
      
    In 1975, our province reaped a bumper of wheat harvest in history. There emerged a large number of advanced districts and units with continually increased yield in large area year by year. This is the result of deeply developing the mass movement to learn from Tachai in agricuture, and carrying out the "Eight-Point- Charter" for agriculture and raising the level of scientific farming. We conducted comprehensive investigations on production technique and economic efficiency related to high yield, stable yield and low-cost of wheat production on 7 millions mu of high yield fields in our province, and obtained some preliminary results. On these bases we analyzed and studied the following problems of how to complete "high, stable and low" of wheat: 1. Means to lower production cost; 2. Measures for establishing proper structure of the plant populations; 3. Rational application of fertilizer and utilization of water and 4. Management according to development of seedling and combination with promotion and control etc.
Abstract (Browse 1831)  |  Full Text PDF       
A Study on the Biological Characteristics and the High Yield Experience of
Author: Paoting Regional Institute of Agricultural Science, Hopei and Hopei Institute of Cereal Crops
Journal of Integrative Plant Biology 1976 18(1)
      
    Using the early ripening and low-strw type of the millet variety combined with the techniques of the cultural practices of closing planting and furrow seeding is one way to obtain 1,000 jin per mu for summer seeding millet. "Yang Tsung millet" is the representative variety of this kind. For past several years, we have carried out investigations on the biological characteristics and the cultural techniques of "Yang Tsung millet" and this has played a certain role in guiding agricultural production. "Yang Tsung millet" is originally a variety for spring seedling. Through many years of summer planting, the climatic conditions during the summer and autumn seasons have made "Yang Tsung millet" to possess some characters such as early maturing, dwarf straw, seedlings with reddish leaves, wide leaves, pointed earheads, short bristles, loose earheads etc. suitable for summer seedling. "Yang Tsung millet" has a short duration of vegetative growth and a long duration of reproductive growth. Its leaf is wide in the middle and attenuate toward both ends, it is suitable for close planting. The differentiation of the earhead commences 23 days after seed germination and completes within 14 days. The ratio of distribution of the dry matter in earheads and grains is great. The grain is of good quality. Practice proves that "Yang Tsung millet" is obviously an effective high-yield variety. "Yang Tsung millet" can reach the high-yield level of "1,000 jin of grain and 800 jin of hay" by means of high degree of close planting, furrow seeding together with cultural techniques of "three earlines" based upon its biological characteristics.
Abstract (Browse 1904)  |  Full Text PDF       
The Electron Theory of Catalysis Applied to Photosynthesis A Resume of the Work Done During the Last Ten Years
Author: Fn Y-j
Journal of Integrative Plant Biology 1976 18(1)
      
    Present account is a brief summary of the work done on the electron theory of catalysis as applied to phytosynthesis during the last ten years. It comprises: 1. analysing the errors of the theory of two photochemical systems in photosynthesis; 2. applying the electron theory of catalysis to the mechanism of photosynthesis; 3. giving the experimental proofs of the inference and 4. using semiconductors instead of chloroplasts to photoreduce NADP to NADPH; synthesis of ATP from ADP and inorganic phosphate under near ultraviolet light.
Abstract (Browse 1990)  |  Full Text PDF       
Constantly Raise the Scientific Level in Culturing Cotton to Promote a New Advance in Cotton Production
Author: Cotton Group, Research Institute of Crops Breeding and Cultivation, Shanghai Agricultural Academy
Journal of Integrative Plant Biology 1976 18(1)
      
    The different development stages of cotton plant require different exterior conditions. Once the broad masses have mastered the developmental law for high yield of cotton they can display boundless creativeness. In order to obtain high yield, they undertake various agricultural measures, such as digging ditchs to drain out water, irrigation, applying fertilizer early in the seedling stages, suitable fertilizer during flower buds formation and a heavy fertilizer for the balls formation stage. Furthermore, decapitation should be done in time. A reasonable pruning and de- foliating will adjust the micro-climate in the cotton field. To overcome unfavourable environmental conditions such as dying of seedlings in chilly spring, overgrowth of plant in rainy spell, shedding of ball or reducing of ball weight in draught of dogdays and rotting of balls in autumn rain, they have to handle correctly the relation between an indivitual plant and the plant stand. 2. Developmental laws of high yield cotton are: a fast growth in the seedling stage, a steady growth in the bud formation and to prevent early deterioration in ball stage. For specific requirements, they are to ensure a full stand of seedlings by the end of April, flower buds should appear in the mid June and the cleavage of the fruit in the later part of August. The technical key link is "seizing of time and sunshine, promote a strong growth of roots and to maintain a steady growth. According to the systematic analysis of materials of 28 mu high yield cotton fields from 1967 to 1974, for yield of 200 catties ginned cotton per mu, the density is 4,500 plants, plant height is about 100em; fruiting spurs are more than 15; fruits per plant are about 50; total number of cotton balls are about 65,000; average hundred balls weight of the three sections (top, middle, bottom) amount to 458 gm; average lint percentages of mid-stage balls is 39.4%. On scorching heat day (23 July), an individual plant bears 0.7 cotton balls. Before "limit of heat day" (23 August), the number of grown balls comprise 78.6% of the total balls and the leaf area index in the maximum flowering stage is about 3.5. 3. The cotton plants of normal growth, undergrowth or overgrowth are different in their external morphology and internal nutritional conversion. Therefore, we should master such indexes as plant height; growth rate per day; red-stem ratio; width of the middle part of fourth leaf (from the top); colour of leaf; carbon-nitrogen ratio of different varieties of cottons in the different growth stages, thus undertake cultural measures during seedling-bud stage (later part of June), bud-flower stage (later part of July) and cotton-ball stage (later part of August) respectively, in order to enable the growth and development of the cotton plants coordinate with the high yield morphological index and thus obtain a high yield of cotton.
Abstract (Browse 1974)  |  Full Text PDF       
A Preliminary Study on the Role of Organic Nutrition on Flower and Pod Shedding in Soybean
Author: Agricultural Experiment Station, Nantsun Commune, Weih County, Shantung and Experiment Group of Liutuan Production Brigade, Nantsun Commune, Weih County, Shantung
Journal of Integrative Plant Biology 1976 18(1)
Abstract (Browse 1827)  |  Full Text PDF       
Preliminary Study on the Use of Amide Content in Wheat as An Indication of Manuring
Author: Speciality of Plant Physiology and Biochemistry, Department of Biology, Peking University
Journal of Integrative Plant Biology 1976 18(1)
Abstract (Browse 1790)  |  Full Text PDF       
Discussion on the Paper of "The Relation between Tillering Capacity and Cumulative Temperature and its Application in Wheat Culture"
Author: Wng Sh-q
Journal of Integrative Plant Biology 1976 18(1)
Abstract (Browse 1657)  |  Full Text PDF       
 

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