The first is the appropriate spraying. In the seedling 1 leaf 1 heart period spray effect is the best, no later than 3 leaf stage.
Second, the dosage should be strictly controlled, and must not be increased or decreased at will. Each acre of field is treated with 15% paclobutrazol powder of 200g and 100kg of water.
The third is to require Putian to level up, spray the front row of dry field water, re-water 24 hours after spraying. Spray evenly to prevent heavy spray or leakage, so as not to cause seedling growth. If it rains within 6 hours after spraying, it should be blocked in time or half-filled.
The fourth is to reduce the amount of sowing in the field. This is the key to the increase in production of paclobutrazol. The amount of sowing is too large to play the advantage of paclobutrazol. The amount of sowing in Putian should be reduced by 20%-30% according to the conventional seeding rate.
The fifth is to do a good job of plowing the fields. Prevent paclobutrazol from remaining in the field, not suitable for seedlings. It should be transplanted after tillage, which can avoid causing residual drug effects and is conducive to the normal growth of late rice.
Paclobutrazol is not used properly and is also prone to negative effects. The main reasons are: too much drug dosage, too high concentration, inhibiting over-heading and hindering growth; in case of low temperature and rain during nursery, the seedling itself grows slowly, and the use of paclobutrazol is often counterproductive; the sowing period is later, the age is shorter, and after the use of paclobutrazol Due to the sustained effect of the drug effect, the growth of the field is hindered, and it is unfavorable to return to the green.
XuChang Youjia Food Product Development Co., LTD , https://www.yjgrain.com