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New varieties of hybrid cotton farmers Miscellaneous 62 for the test material, sowing date, density, N application on the the boll formation of the spatial and temporal distribution and yield components. The main results are as follows: 1 sowing date, density, N application on the hybrid cotton farmers miscellaneous 62 \increased slight increase in N application too much or too little to reduce peach volts before ratio; autumn peach proportion of sowing date postponed, reduced with the density increases with N rate increases; volts peach in total proportion of boll number, an average of 62%. 2 cotton plant fruiting branch bolls was less - and more - less trend from the bottom, fruiting branches 4-10 boll more leafy shoots into the bell average 5.31 / strains, 3 processing up to $ 10.8 / plant . Sowing date postponed the cotton plant lower part of the increase in boll, upper boll reduce leafy shoots occur less and the boll less; increase with the amount of applied N, the upper part of the increased boll, and a corresponding decrease in the lower boll proportion; density , the lower and upper boll more central boll less. Horizontal the first 1,2,3 Fruit Festival on boll rate 4,5 fruit section boll rate gradually decreased, the fruit section 6 and beyond boll rarely, but when the density is low or the N large amount 4 other than the fruit section of the middle and lower boll more. Sowing date of leafy shoots into bell. Early sowing or low-density or high N levels leafy shoots into the bell and more. 3 to establish a the cultivation factor regression models lint yield and lint yield (Y) and sowing date (X 1 ), density (X 2 ), N application level (X < sub> 3 ) regression model: Y = 146.89-2.33X 1 -3.16X 2 9.30X 3 -7.12 X 1 2 -6.69X 2 2 -12.20X 3 2 0.79X 1 X 2 0.45X 1 X 3 -2.01X 2 X 3 , statistical tests, the equation fit (chi-square (x 2 ) 12.27, not significant). By the derivation, the sowing period of April 17-18, 1552 / acre density and applied pure N17.65kg / acre, the highest lint yield can be obtained 149.24kg / acre. 4 cultivation factors on yield components of performance, a significant increase in the number of bolls per plant with decreasing density, high levels of N application processing boll number more high N supply boll reduce the number of early sowing deal with late sowing have more boll number. Total boll number of interactions influenced by three factors. Applied N is the total boll number, total boll number N application processing at least, but applied N is too much bell. The whole plant average boll weight with the N increases, has increased with sowing date postponed density had no significant effect on boll weight. Lint percentage stable and not significantly affected by the cultivation factors. 5 longitudinal fruiting branches of cotton plants in central lint yield contribution rate, less affected by the cultivation conditions, close to each treatment, an average of 33.37%; leafy shoots average lint yield contribution rate of 11.57% up to 18.57% (5 handling ), a minimum of 1.68% (treatment 2). Maximum horizontal first contribution rate of 1,2 Fruit Festival, were 25.99%, 25.23%, the contribution of the peripheral Fruit Festival lint yield 18.61% 23.66% (10 treatment), the highest and the lowest was 7.81% (2 processing ). The production of hybrid cotton, leafy shoots and peripheral Fruit Festival productive role can not be ignored.
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