2012年12月18日 星期二

不同泰國榴槤品種的產期性差異(摘錄自馬國農業部網站)

Thailand 
Gra-doom-tawng matures early (with fruits ripening in 90-100 days from anthesis)to get the high market price, Chanee and Kanyao mature in mid-season( 105-115 days ) and Monthong late season(120-130 days). This lenghtens the durian season, thus avoiding the risk of over-production to meet consumers demand, and maintaining good market prices throughout the season

Water is also very crucial especially during flowering and fruit development stages to achieve good and quality yields. Many farmers use the irrigation system not only to supply water but to deliver plant nutrients, supplements and chemicals directly to the durian trees. A stream with a regular flow of water even in the dry months or a well with high water table are excellent features for a durian orchard.

Operating a durian orchard without irrigation facilities is a very risky venture. Rainfall can varies greatly from year to year and from month to month. The dry months that occur in-between the monsoons play a critical role in durian production.

A period of 3 to 4 weeks dry weather is needed to stimulate flowering. It takes about one month for a durian flower to develop from first appearance as a tiny bud to an open blossom. Water is important to promote growth and development of the flower buds, blooming, fruit set, fruit growth and maturity.

To rely entirely on available moisture in the soil and rainfall is perilous. If the weather is too dry and hot, the flowers will shriveled, and fruit development hindered. On the other hand, too much rain and high relative humidity cause poor fruit set. The best option is to have an efficient irrigation system to manage water properly during the durian reproductive stage to achieve high yields of good quality fruits.


A durian orchard without irrigation is like growing durian the traditional way. Any improvement in durian production can only come from how well you adapt the durian trees to suit the natural environment and its dynamic conditions. Some of the options that you can use are: plant drought tolerant clones or cultivars, use advanced planting materials, adopt wider planting system, practise harder pruning, ensure proper fertilizers placement and timing, and practise integrated pests, diseases and weeds control. However, the durian trees will be much bigger and taller than their irrigated counter-parts. They will also take a longer period to mature and to start bearing, and the yields much lower.

Setting up a proper irrigation system is expensive but it's a good long-term investment if you are really serious in getting the best from your durian trees. Many successful farmers used second-hand diesel engines from trucks or lorries, some modifications and low cost to run their water-pumps. They can be as powerful and efficient as new ones.

PVC pipes should be buried in the ground to prevent rodents from chewing into them. Unburied pipes are usually hidden from sight by overgrown weeds or other vegetation thus making them easily damaged by moving vehicles or farm machinery especially grass-cutters. Fire can also burn and destroy PVC pipes lying unprotected on the ground.

It's a good practice to set up the irrigation system first as it is very difficult to lay out the heavy and rigid PVC pipes without causing damage to young durian trees which are already planted in the field

沒有留言:

張貼留言