The appropriate density of cotton is based on:
1. Constrained by the effective growth period of cotton in the Yellow River Basin, it is appropriate to use 18-20 effective bells per plant, which can reduce the burden of ringing per plant and is easier to achieve; it can reach an effective bell of 50,000-5.5 million mu, according to the average The weight of the bell is calculated from 5 to 5.5 grams; it is easy to realize 275-300 kilograms of cotton per mu. This not only exerts the individual fertility advantage of the cotton plant, but also exerts the fertility advantage of the cotton field group, which is the better coordination result of the two.
2, in the high-yield structure, should focus on the number of acres and single bells and heavy weight, do not pursue excessive number of acres, so as not to reduce the quality and uniformity of cotton bolls, is conducive to avoiding risks; Guoxin cotton and many other popular varieties are improving There is a great potential in the weight of the bell. If the measures are in place, the weight of the peach in the early autumn does not decrease. According to the statistics of Guoxin Farm for three years:
The number of harvested plants per mu is 2,868, the number of effective bells per plant is 17.85, the number of effective bells is 51,194, the weight of single boll is 5.92 g, and the yield per mu is 296.5 kg. According to the measured output, the average yield per mu is 303 kg, which is very close to the actual production, indicating that the above survey data is more accurate and credible.
In the Qinghe farm with high soil fertility, the average single boll weighs 6.2 grams, 35 single bells, and single-grain cotton weighs 0.177 grams. The medium-strength Jinghai base has a single boll weight of 5.51 grams, 32 single bells and 0.172 grams of single grain weight.
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